tests: Format all Python code with black, except tests in basics subdir.

This adds the Python files in the tests/ directory to be formatted with
./tools/codeformat.py.  The basics/ subdirectory is excluded for now so we
aren't changing too much at once.

In a few places `# fmt: off`/`# fmt: on` was used where the code had
special formatting for readability or where the test was actually testing
the specific formatting.

tests/cmdline/cmd_parsetree.py

@@ -4,9 +4,9 @@
 for i in ():
     pass
 a = None
-b = 'str'
-c = 'a very long str that will not be interned'
-d = b'bytes'
-e = b'a very long bytes that will not be interned'
+b = "str"
+c = "a very long str that will not be interned"
+d = b"bytes"
+e = b"a very long bytes that will not be interned"
 f = 123456789012345678901234567890
 g = 123

tests/cmdline/cmd_showbc.py

@@ -1,5 +1,6 @@
 # cmdline: -v -v
 # test printing of all bytecodes
+# fmt: off
 
 def f():
     # constants

tests/cmdline/cmd_showbc.py.exp

@@ -7,7 +7,7 @@ arg names:
 (N_EXC_STACK 0)
   bc=0 line=1
 ########
-  bc=\\d\+ line=159
+  bc=\\d\+ line=160
 00 MAKE_FUNCTION \.\+
 \\d\+ STORE_NAME f
 \\d\+ MAKE_FUNCTION \.\+
@@ -45,7 +45,7 @@ Raw bytecode (code_info_size=\\d\+, bytecode_size=\\d\+):
 (INIT_CELL 16)
   bc=0 line=1
 ########
-  bc=\\d\+ line=126
+  bc=\\d\+ line=127
 00 LOAD_CONST_NONE
 01 LOAD_CONST_FALSE
 02 BINARY_OP 27 __add__
@@ -320,7 +320,7 @@ Raw bytecode (code_info_size=\\d\+, bytecode_size=\\d\+):
 (N_EXC_STACK 0)
   bc=0 line=1
 ########
-  bc=\\d\+ line=132
+  bc=\\d\+ line=133
 00 LOAD_CONST_SMALL_INT 1
 01 DUP_TOP
 02 STORE_FAST 0
@@ -376,7 +376,7 @@ arg names: a
 (N_EXC_STACK 0)
 (INIT_CELL 0)
 ########
-  bc=\\d\+ line=138
+  bc=\\d\+ line=139
 00 LOAD_CONST_SMALL_INT 2
 01 BUILD_TUPLE 1
 03 LOAD_NULL
@@ -393,9 +393,9 @@ arg names:
 (N_STATE 2)
 (N_EXC_STACK 0)
   bc=0 line=1
-  bc=0 line=143
-  bc=3 line=144
-  bc=6 line=145
+  bc=0 line=144
+  bc=3 line=145
+  bc=6 line=146
 00 LOAD_CONST_NONE
 01 YIELD_VALUE
 02 POP_TOP
@@ -418,7 +418,7 @@ arg names:
 (N_EXC_STACK 0)
   bc=0 line=1
 ########
-  bc=13 line=149
+  bc=13 line=150
 00 LOAD_NAME __name__ (cache=0)
 04 STORE_NAME __module__
 07 LOAD_CONST_STRING 'Class'
@@ -433,7 +433,7 @@ arg names: self
 (N_STATE 4)
 (N_EXC_STACK 0)
   bc=0 line=1
-  bc=0 line=156
+  bc=0 line=157
 00 LOAD_GLOBAL super (cache=0)
 \\d\+ LOAD_GLOBAL __class__ (cache=0)
 \\d\+ LOAD_FAST 0
@@ -450,7 +450,7 @@ arg names: * * *
 (N_STATE 9)
 (N_EXC_STACK 0)
   bc=0 line=1
-  bc=0 line=59
+  bc=0 line=60
 ########
 00 LOAD_NULL
 01 LOAD_FAST 2
@@ -474,7 +474,7 @@ arg names: * * *
 (N_STATE 10)
 (N_EXC_STACK 0)
   bc=0 line=1
-  bc=0 line=60
+  bc=0 line=61
 ########
 00 BUILD_LIST 0
 02 LOAD_FAST 2
@@ -517,7 +517,7 @@ arg names: *
 (N_EXC_STACK 0)
   bc=0 line=1
 ########
-  bc=\\d\+ line=113
+  bc=\\d\+ line=114
 00 LOAD_DEREF 0
 02 LOAD_CONST_SMALL_INT 1
 03 BINARY_OP 27 __add__
@@ -536,7 +536,7 @@ arg names: * b
 (N_EXC_STACK 0)
   bc=0 line=1
 ########
-  bc=\\d\+ line=139
+  bc=\\d\+ line=140
 00 LOAD_FAST 1
 01 LOAD_DEREF 0
 03 BINARY_OP 27 __add__

tests/cpydiff/core_class_delnotimpl.py

@@ -6,9 +6,11 @@ workaround: Unknown
 """
 import gc
 
-class Foo():
+
+class Foo:
     def __del__(self):
-        print('__del__')
+        print("__del__")
+
 
 f = Foo()
 del f

tests/cpydiff/core_class_mro.py

@@ -4,12 +4,16 @@ description: Method Resolution Order (MRO) is not compliant with CPython
 cause: Depth first non-exhaustive method resolution order
 workaround: Avoid complex class hierarchies with multiple inheritance and complex method overrides. Keep in mind that many languages don't support multiple inheritance at all.
 """
+
+
 class Foo:
     def __str__(self):
         return "Foo"
 
+
 class C(tuple, Foo):
     pass
 
+
 t = C((1, 2, 3))
 print(t)

tests/cpydiff/core_class_supermultiple.py

@@ -4,15 +4,19 @@ description: When inheriting from multiple classes super() only calls one class
 cause: See :ref:`cpydiff_core_class_mro`
 workaround: See :ref:`cpydiff_core_class_mro`
 """
+
+
 class A:
     def __init__(self):
         print("A.__init__")
 
+
 class B(A):
     def __init__(self):
         print("B.__init__")
         super().__init__()
 
+
 class C(A):
     def __init__(self):
         print("C.__init__")
@@ -24,4 +28,5 @@ class D(B,C):
         print("D.__init__")
         super().__init__()
 
+
 D()

tests/cpydiff/core_class_superproperty.py

@@ -4,15 +4,19 @@ description: Calling super() getter property in subclass will return a property
 cause: Unknown
 workaround: Unknown
 """
+
+
 class A:
     @property
     def p(self):
         return {"a": 10}
 
+
 class AA(A):
     @property
     def p(self):
         return super().p
 
+
 a = AA()
 print(a.p)

tests/cpydiff/core_function_userattr.py

@@ -4,8 +4,11 @@ description: User-defined attributes for functions are not supported
 cause: MicroPython is highly optimized for memory usage.
 workaround: Use external dictionary, e.g. ``FUNC_X[f] = 0``.
 """
+
+
 def f():
     pass
 
+
 f.x = 0
 print(f.x)

tests/cpydiff/core_generator_noexit.py

@@ -4,11 +4,15 @@ description: Context manager __exit__() not called in a generator which does not
 cause: Unknown
 workaround: Unknown
 """
+
+
 class foo(object):
     def __enter__(self):
-        print('Enter')
+        print("Enter")
+
     def __exit__(self, *args):
-        print('Exit')
+        print("Exit")
+
 
 def bar(x):
     with foo():
@@ -16,9 +20,11 @@ def bar(x):
             x += 1
             yield x
 
+
 def func():
     g = bar(0)
     for _ in range(3):
         print(next(g))
 
+
 func()

tests/cpydiff/core_import_prereg.py

@@ -12,6 +12,7 @@ except NameError as e:
     print(e)
 try:
     from modules import foo
-    print('Should not get here')
+
+    print("Should not get here")
 except NameError as e:
     print(e)

tests/cpydiff/core_import_split_ns_pkgs.py

@@ -5,6 +5,7 @@ cause: MicroPython's import system is highly optimized for simplicity, minimal m
 workaround: Don't install modules belonging to the same namespace package in different directories. For MicroPython, it's recommended to have at most 3-component module search paths: for your current application, per-user (writable), system-wide (non-writable).
 """
 import sys
+
 sys.path.append(sys.path[1] + "/modules")
 sys.path.append(sys.path[1] + "/modules2")
 

tests/cpydiff/core_locals.py

@@ -4,8 +4,11 @@ description: Local variables aren't included in locals() result
 cause: MicroPython doesn't maintain symbolic local environment, it is optimized to an array of slots. Thus, local variables can't be accessed by a name.
 workaround: Unknown
 """
+
+
 def test():
     val = 2
     print(locals())
 
+
 test()

tests/cpydiff/core_locals_eval.py

@@ -6,9 +6,11 @@ workaround: Unknown
 """
 val = 1
 
+
 def test():
     val = 2
     print(val)
     eval("print(val)")
 
+
 test()

tests/cpydiff/modules/foo.py

@@ -1,2 +1,2 @@
-print('foo')
+print("foo")
 xxx

tests/cpydiff/modules_array_containment.py

@@ -5,4 +5,5 @@ cause: Unknown
 workaround: Unknown
 """
 import array
-print(1 in array.array('B', b'12'))
+
+print(1 in array.array("B", b"12"))

tests/cpydiff/modules_array_deletion.py

@@ -5,6 +5,7 @@ cause: Unknown
 workaround: Unknown
 """
 import array
-a = array.array('b', (1, 2, 3))
+
+a = array.array("b", (1, 2, 3))
 del a[1]
 print(a)

tests/cpydiff/modules_array_subscrstep.py

@@ -5,5 +5,6 @@ cause: Unknown
 workaround: Unknown
 """
 import array
-a = array.array('b', (1, 2, 3))
+
+a = array.array("b", (1, 2, 3))
 print(a[3:2:2])

tests/cpydiff/modules_deque.py

@@ -5,5 +5,6 @@ cause: Unknown
 workaround: Use regular lists. micropython-lib has implementation of collections.deque.
 """
 import collections
+
 D = collections.deque()
 print(D)

tests/cpydiff/modules_json_nonserializable.py

@@ -5,10 +5,11 @@ cause: Unknown
 workaround: Unknown
 """
 import json
+
 a = bytes(x for x in range(256))
 try:
     z = json.dumps(a)
     x = json.loads(z)
-    print('Should not get here')
+    print("Should not get here")
 except TypeError:
-    print('TypeError')
+    print("TypeError")

tests/cpydiff/modules_os_environ.py

@@ -5,12 +5,13 @@ cause: Unknown
 workaround: Use ``getenv``, ``putenv`` and ``unsetenv``
 """
 import os
+
 try:
-    print(os.environ.get('NEW_VARIABLE'))
-    os.environ['NEW_VARIABLE'] = 'VALUE'
-    print(os.environ['NEW_VARIABLE'])
+    print(os.environ.get("NEW_VARIABLE"))
+    os.environ["NEW_VARIABLE"] = "VALUE"
+    print(os.environ["NEW_VARIABLE"])
 except AttributeError:
-    print('should not get here')
-    print(os.getenv('NEW_VARIABLE'))
-    os.putenv('NEW_VARIABLE', 'VALUE')
-    print(os.getenv('NEW_VARIABLE'))
+    print("should not get here")
+    print(os.getenv("NEW_VARIABLE"))
+    os.putenv("NEW_VARIABLE", "VALUE")
+    print(os.getenv("NEW_VARIABLE"))

tests/cpydiff/modules_os_getenv.py

@@ -5,6 +5,7 @@ cause: The ``environ`` attribute is not implemented
 workaround: Unknown
 """
 import os
-print(os.getenv('NEW_VARIABLE'))
-os.putenv('NEW_VARIABLE', 'VALUE')
-print(os.getenv('NEW_VARIABLE'))
+
+print(os.getenv("NEW_VARIABLE"))
+os.putenv("NEW_VARIABLE", "VALUE")
+print(os.getenv("NEW_VARIABLE"))

tests/cpydiff/modules_os_getenv_argcount.py

@@ -5,9 +5,10 @@ cause: Unknown
 workaround: Test that the return value is ``None``
 """
 import os
+
 try:
-    print(os.getenv('NEW_VARIABLE', 'DEFAULT'))
+    print(os.getenv("NEW_VARIABLE", "DEFAULT"))
 except TypeError:
-    print('should not get here')
+    print("should not get here")
     # this assumes NEW_VARIABLE is never an empty variable
-    print(os.getenv('NEW_VARIABLE') or 'DEFAULT')
+    print(os.getenv("NEW_VARIABLE") or "DEFAULT")

tests/cpydiff/modules_struct_fewargs.py

@@ -5,8 +5,9 @@ cause: Unknown
 workaround: Unknown
 """
 import struct
+
 try:
-    print(struct.pack('bb', 1))
-    print('Should not get here')
+    print(struct.pack("bb", 1))
+    print("Should not get here")
 except:
-    print('struct.error')
+    print("struct.error")

tests/cpydiff/modules_struct_manyargs.py

@@ -5,8 +5,9 @@ cause: Unknown
 workaround: Unknown
 """
 import struct
+
 try:
-    print(struct.pack('bb', 1, 2, 3))
-    print('Should not get here')
+    print(struct.pack("bb", 1, 2, 3))
+    print("Should not get here")
 except:
-    print('struct.error')
+    print("struct.error")

tests/cpydiff/modules_sys_stdassign.py

@@ -5,5 +5,6 @@ cause: They are stored in read-only memory.
 workaround: Unknown
 """
 import sys
+
 sys.stdin = None
 print(sys.stdin)

tests/cpydiff/syntax_spaces.py

@@ -5,14 +5,14 @@ cause: Unknown
 workaround: Unknown
 """
 try:
-    print(eval('1and 0'))
+    print(eval("1and 0"))
 except SyntaxError:
-    print('Should have worked')
+    print("Should have worked")
 try:
-    print(eval('1or 0'))
+    print(eval("1or 0"))
 except SyntaxError:
-    print('Should have worked')
+    print("Should have worked")
 try:
-    print(eval('1if 1else 0'))
+    print(eval("1if 1else 0"))
 except SyntaxError:
-    print('Should have worked')
+    print("Should have worked")

tests/cpydiff/types_bytes_format.py

@@ -4,4 +4,4 @@ description: bytes objects support .format() method
 cause: MicroPython strives to be a more regular implementation, so if both `str` and `bytes` support ``__mod__()`` (the % operator), it makes sense to support ``format()`` for both too. Support for ``__mod__`` can also be compiled out, which leaves only ``format()`` for bytes formatting.
 workaround: If you are interested in CPython compatibility, don't use ``.format()`` on bytes objects.
 """
-print(b'{}'.format(1))
+print(b"{}".format(1))

tests/cpydiff/types_bytes_keywords.py

@@ -4,4 +4,4 @@ description: bytes() with keywords not implemented
 cause: Unknown
 workaround: Pass the encoding as a positional parameter, e.g. ``print(bytes('abc', 'utf-8'))``
 """
-print(bytes('abc', encoding='utf8'))
+print(bytes("abc", encoding="utf8"))

tests/cpydiff/types_bytes_subscrstep.py

@@ -4,4 +4,4 @@ description: Bytes subscription with step != 1 not implemented
 cause: MicroPython is highly optimized for memory usage.
 workaround: Use explicit loop for this very rare operation.
 """
-print(b'123'[0:3:2])
+print(b"123"[0:3:2])

tests/cpydiff/types_exception_subclassinit.py

@@ -8,8 +8,11 @@ workaround: Call using ``super()`` instead::
         def __init__(self):
             super().__init__()
 """
+
+
 class A(Exception):
     def __init__(self):
         Exception.__init__(self)
 
+
 a = A()

tests/cpydiff/types_float_rounding.py

@@ -4,4 +4,4 @@ description: uPy and CPython outputs formats may differ
 cause: Unknown
 workaround: Unknown
 """
-print('%.1g' % -9.9)
+print("%.1g" % -9.9)

tests/cpydiff/types_int_subclassconv.py

@@ -4,8 +4,11 @@ description: No int conversion for int-derived types available
 cause: Unknown
 workaround: Avoid subclassing builtin types unless really needed. Prefer https://en.wikipedia.org/wiki/Composition_over_inheritance .
 """
+
+
 class A(int):
     __add__ = lambda self, other: A(int(self) + other)
 
+
 a = A(42)
 print(a + a)

tests/cpydiff/types_str_endswith.py

@@ -4,4 +4,4 @@ description: Start/end indices such as str.endswith(s, start) not implemented
 cause: Unknown
 workaround: Unknown
 """
-print('abc'.endswith('c', 1))
+print("abc".endswith("c", 1))

tests/cpydiff/types_str_formatsubscr.py

@@ -4,4 +4,4 @@ description: Attributes/subscr not implemented
 cause: Unknown
 workaround: Unknown
 """
-print('{a[0]}'.format(a=[1, 2]))
+print("{a[0]}".format(a=[1, 2]))

tests/cpydiff/types_str_keywords.py

@@ -4,4 +4,4 @@ description: str(...) with keywords not implemented
 cause: Unknown
 workaround: Input the encoding format directly. eg ``print(bytes('abc', 'utf-8'))``
 """
-print(str(b'abc', encoding='utf8'))
+print(str(b"abc", encoding="utf8"))

tests/cpydiff/types_str_ljust_rjust.py

@@ -4,4 +4,4 @@ description: str.ljust() and str.rjust() not implemented
 cause: MicroPython is highly optimized for memory usage. Easy workarounds available.
 workaround: Instead of ``s.ljust(10)`` use ``"%-10s" % s``, instead of ``s.rjust(10)`` use ``"% 10s" % s``. Alternatively, ``"{:<10}".format(s)`` or ``"{:>10}".format(s)``.
 """
-print('abc'.ljust(10))
+print("abc".ljust(10))

tests/cpydiff/types_str_rsplitnone.py

@@ -4,4 +4,4 @@ description: None as first argument for rsplit such as str.rsplit(None, n) not i
 cause: Unknown
 workaround: Unknown
 """
-print('a a a'.rsplit(None, 1))
+print("a a a".rsplit(None, 1))

tests/cpydiff/types_str_subscrstep.py

@@ -4,4 +4,4 @@ description: Subscript with step != 1 is not yet implemented
 cause: Unknown
 workaround: Unknown
 """
-print('abcdefghi'[0:9:2])
+print("abcdefghi"[0:9:2])

tests/extmod/framebuf1.py

@@ -8,9 +8,11 @@ w = 5
 h = 16
 size = w * h // 8
 buf = bytearray(size)
-maps = {framebuf.MONO_VLSB : 'MONO_VLSB',
-        framebuf.MONO_HLSB : 'MONO_HLSB',
-        framebuf.MONO_HMSB : 'MONO_HMSB'}
+maps = {
+    framebuf.MONO_VLSB: "MONO_VLSB",
+    framebuf.MONO_HLSB: "MONO_HLSB",
+    framebuf.MONO_HMSB: "MONO_HMSB",
+}
 
 for mapping in maps.keys():
     for x in range(size):
@@ -43,33 +45,33 @@ for mapping in maps.keys():
     # hline
     fbuf.fill(0)
     fbuf.hline(0, 1, w, 1)
-    print('hline', buf)
+    print("hline", buf)
 
     # vline
     fbuf.fill(0)
     fbuf.vline(1, 0, h, 1)
-    print('vline', buf)
+    print("vline", buf)
 
     # rect
     fbuf.fill(0)
     fbuf.rect(1, 1, 3, 3, 1)
-    print('rect', buf)
+    print("rect", buf)
 
     # fill rect
     fbuf.fill(0)
     fbuf.fill_rect(0, 0, 0, 3, 1)  # zero width, no-operation
     fbuf.fill_rect(1, 1, 3, 3, 1)
-    print('fill_rect', buf)
+    print("fill_rect", buf)
 
     # line
     fbuf.fill(0)
     fbuf.line(1, 1, 3, 3, 1)
-    print('line', buf)
+    print("line", buf)
 
     # line steep negative gradient
     fbuf.fill(0)
     fbuf.line(3, 3, 2, 1, 1)
-    print('line', buf)
+    print("line", buf)
 
     # scroll
     fbuf.fill(0)

tests/extmod/framebuf16.py

@@ -4,28 +4,30 @@ except ImportError:
     print("SKIP")
     raise SystemExit
 
+
 def printbuf():
     print("--8<--")
     for y in range(h):
         print(buf[y * w * 2 : (y + 1) * w * 2])
     print("-->8--")
 
+
 w = 4
 h = 5
 buf = bytearray(w * h * 2)
 fbuf = framebuf.FrameBuffer(buf, w, h, framebuf.RGB565)
 
 # fill
-fbuf.fill(0xffff)
+fbuf.fill(0xFFFF)
 printbuf()
 fbuf.fill(0x0000)
 printbuf()
 
 # put pixel
-fbuf.pixel(0, 0, 0xeeee)
-fbuf.pixel(3, 0, 0xee00)
-fbuf.pixel(0, 4, 0x00ee)
-fbuf.pixel(3, 4, 0x0ee0)
+fbuf.pixel(0, 0, 0xEEEE)
+fbuf.pixel(3, 0, 0xEE00)
+fbuf.pixel(0, 4, 0x00EE)
+fbuf.pixel(3, 4, 0x0EE0)
 printbuf()
 
 # get pixel
@@ -33,7 +35,7 @@ print(fbuf.pixel(0, 4), fbuf.pixel(1, 1))
 
 # scroll
 fbuf.fill(0x0000)
-fbuf.pixel(2, 2, 0xffff)
+fbuf.pixel(2, 2, 0xFFFF)
 printbuf()
 fbuf.scroll(0, 1)
 printbuf()
@@ -48,11 +50,11 @@ buf2 = bytearray(w2 * h2 * 2)
 fbuf2 = framebuf.FrameBuffer(buf2, w2, h2, framebuf.RGB565)
 
 fbuf2.fill(0x0000)
-fbuf2.pixel(0, 0, 0x0ee0)
-fbuf2.pixel(0, 2, 0xee00)
-fbuf2.pixel(1, 0, 0x00ee)
-fbuf2.pixel(1, 2, 0xe00e)
-fbuf.fill(0xffff)
+fbuf2.pixel(0, 0, 0x0EE0)
+fbuf2.pixel(0, 2, 0xEE00)
+fbuf2.pixel(1, 0, 0x00EE)
+fbuf2.pixel(1, 2, 0xE00E)
+fbuf.fill(0xFFFF)
 fbuf.blit(fbuf2, 3, 3, 0x0000)
 fbuf.blit(fbuf2, -1, -1, 0x0000)
 fbuf.blit(fbuf2, 16, 16, 0x0000)

tests/extmod/framebuf2.py

@@ -4,14 +4,16 @@ except ImportError:
     print("SKIP")
     raise SystemExit
 
+
 def printbuf():
     print("--8<--")
     for y in range(h):
         for x in range(w):
-            print('%u' % ((buf[(x + y * w) // 4] >> ((x & 3) << 1)) & 3), end='')
+            print("%u" % ((buf[(x + y * w) // 4] >> ((x & 3) << 1)) & 3), end="")
         print()
     print("-->8--")
 
+
 w = 8
 h = 5
 buf = bytearray(w * h // 4)

tests/extmod/framebuf4.py

@@ -4,21 +4,23 @@ except ImportError:
     print("SKIP")
     raise SystemExit
 
+
 def printbuf():
     print("--8<--")
     for y in range(h):
         print(buf[y * w // 2 : (y + 1) * w // 2])
     print("-->8--")
 
+
 w = 16
 h = 8
 buf = bytearray(w * h // 2)
 fbuf = framebuf.FrameBuffer(buf, w, h, framebuf.GS4_HMSB)
 
 # fill
-fbuf.fill(0x0f)
+fbuf.fill(0x0F)
 printbuf()
-fbuf.fill(0xa0)
+fbuf.fill(0xA0)
 printbuf()
 
 # put pixel
@@ -36,18 +38,18 @@ print(fbuf.pixel(0, 0), fbuf.pixel(w-1, 0), fbuf.pixel(w-1, h-1), fbuf.pixel(0,
 print(fbuf.pixel(1, 0), fbuf.pixel(w - 2, 0), fbuf.pixel(w - 2, h - 1), fbuf.pixel(1, h - 1))
 
 # fill rect
-fbuf.fill_rect(0, 0, w, h, 0x0f)
+fbuf.fill_rect(0, 0, w, h, 0x0F)
 printbuf()
-fbuf.fill_rect(0, 0, w, h, 0xf0)
-fbuf.fill_rect(1, 0, w//2+1, 1, 0xf1)
+fbuf.fill_rect(0, 0, w, h, 0xF0)
+fbuf.fill_rect(1, 0, w // 2 + 1, 1, 0xF1)
 printbuf()
 fbuf.fill_rect(1, 0, w // 2 + 1, 1, 0x10)
-fbuf.fill_rect(1, 0, w//2, 1, 0xf1)
+fbuf.fill_rect(1, 0, w // 2, 1, 0xF1)
 printbuf()
 fbuf.fill_rect(1, 0, w // 2, 1, 0x10)
-fbuf.fill_rect(0, h-4, w//2+1, 4, 0xaf)
+fbuf.fill_rect(0, h - 4, w // 2 + 1, 4, 0xAF)
 printbuf()
-fbuf.fill_rect(0, h-4, w//2+1, 4, 0xb0)
-fbuf.fill_rect(0, h-4, w//2, 4, 0xaf)
+fbuf.fill_rect(0, h - 4, w // 2 + 1, 4, 0xB0)
+fbuf.fill_rect(0, h - 4, w // 2, 4, 0xAF)
 printbuf()
-fbuf.fill_rect(0, h-4, w//2, 4, 0xb0)
+fbuf.fill_rect(0, h - 4, w // 2, 4, 0xB0)

tests/extmod/framebuf8.py

@@ -4,14 +4,16 @@ except ImportError:
     print("SKIP")
     raise SystemExit
 
+
 def printbuf():
     print("--8<--")
     for y in range(h):
         for x in range(w):
-            print('%02x' % buf[(x + y * w)], end='')
+            print("%02x" % buf[(x + y * w)], end="")
         print()
     print("-->8--")
 
+
 w = 8
 h = 5
 buf = bytearray(w * h)
@@ -25,7 +27,7 @@ printbuf()
 fbuf.pixel(0, 0, 0x11)
 fbuf.pixel(w - 1, 0, 0x22)
 fbuf.pixel(0, h - 1, 0x33)
-fbuf.pixel(w - 1, h - 1, 0xff)
+fbuf.pixel(w - 1, h - 1, 0xFF)
 printbuf()
 
 # get pixel

tests/extmod/framebuf_subclass.py

@@ -3,9 +3,10 @@
 try:
     import framebuf
 except ImportError:
-    print('SKIP')
+    print("SKIP")
     raise SystemExit
 
+
 class FB(framebuf.FrameBuffer):
     def __init__(self, n):
         self.n = n
@@ -14,6 +15,7 @@ class FB(framebuf.FrameBuffer):
     def foo(self):
         self.hline(0, 2, self.n, 0x0304)
 
+
 fb = FB(n=3)
 fb.pixel(0, 0, 0x0102)
 fb.foo()
@@ -31,12 +33,13 @@ print(bytes(fb2))
 class NotAFrameBuf:
     pass
 
+
 try:
     fb.blit(NotAFrameBuf(), 0, 0)
 except TypeError:
-    print('TypeError')
+    print("TypeError")
 
 try:
     fb.blit(None, 0, 0)
 except TypeError:
-    print('TypeError')
+    print("TypeError")

tests/extmod/machine_pinbase.py

@@ -10,7 +10,6 @@ except:
 
 
 class MyPin(machine.PinBase):
-
     def __init__(self):
         print("__init__")
         self.v = False
@@ -21,6 +20,7 @@ class MyPin(machine.PinBase):
             self.v = not self.v
             return int(self.v)
 
+
 p = MyPin()
 
 print(p.value())

tests/extmod/machine_pulse.py

@@ -11,7 +11,6 @@ except:
 
 
 class ConstPin(machine.PinBase):
-
     def __init__(self, value):
         self.v = value
 
@@ -23,7 +22,6 @@ class ConstPin(machine.PinBase):
 
 
 class TogglePin(machine.PinBase):
-
     def __init__(self):
         self.v = 0
 

tests/extmod/machine_signal.py

@@ -11,6 +11,7 @@ except:
     print("SKIP")
     raise SystemExit
 
+
 class Pin(machine.PinBase):
     def __init__(self):
         self.v = 0

tests/extmod/machine_timer.py

@@ -2,6 +2,7 @@
 
 try:
     import utime, umachine as machine
+
     machine.Timer
 except:
     print("SKIP")
@@ -27,11 +28,11 @@ t2.deinit()
 t.deinit()
 
 # create one-shot timer with callback and wait for it to print (should be just once)
-t = machine.Timer(period=1, mode=machine.Timer.ONE_SHOT, callback=lambda t:print('one-shot'))
+t = machine.Timer(period=1, mode=machine.Timer.ONE_SHOT, callback=lambda t: print("one-shot"))
 utime.sleep_ms(5)
 t.deinit()
 
 # create periodic timer with callback and wait for it to print
-t = machine.Timer(period=4, mode=machine.Timer.PERIODIC, callback=lambda t:print('periodic'))
+t = machine.Timer(period=4, mode=machine.Timer.PERIODIC, callback=lambda t: print("periodic"))
 utime.sleep_ms(14)
 t.deinit()

tests/extmod/time_ms_us.py

@@ -1,5 +1,6 @@
 try:
     import utime
+
     utime.sleep_ms, utime.sleep_us, utime.ticks_diff, utime.ticks_ms, utime.ticks_us, utime.ticks_cpu
 except (ImportError, AttributeError):
     print("SKIP")

tests/extmod/ubinascii_a2b_base64.py

@@ -7,40 +7,40 @@ except ImportError:
     print("SKIP")
     raise SystemExit
 
-print(binascii.a2b_base64(b''))
-print(binascii.a2b_base64(b'Zg=='))
-print(binascii.a2b_base64(b'Zm8='))
-print(binascii.a2b_base64(b'Zm9v'))
-print(binascii.a2b_base64(b'Zm9vYg=='))
-print(binascii.a2b_base64(b'Zm9vYmE='))
-print(binascii.a2b_base64(b'Zm9vYmFy'))
+print(binascii.a2b_base64(b""))
+print(binascii.a2b_base64(b"Zg=="))
+print(binascii.a2b_base64(b"Zm8="))
+print(binascii.a2b_base64(b"Zm9v"))
+print(binascii.a2b_base64(b"Zm9vYg=="))
+print(binascii.a2b_base64(b"Zm9vYmE="))
+print(binascii.a2b_base64(b"Zm9vYmFy"))
 
-print(binascii.a2b_base64(b'AAECAwQFBgc='))
-print(binascii.a2b_base64(b'CAkKCwwNDg8='))
-print(binascii.a2b_base64(b'f4D/'))
-print(binascii.a2b_base64(b'f4D+')) # convert '+'
-print(binascii.a2b_base64(b'MTIzNEFCQ0RhYmNk'))
+print(binascii.a2b_base64(b"AAECAwQFBgc="))
+print(binascii.a2b_base64(b"CAkKCwwNDg8="))
+print(binascii.a2b_base64(b"f4D/"))
+print(binascii.a2b_base64(b"f4D+"))  # convert '+'
+print(binascii.a2b_base64(b"MTIzNEFCQ0RhYmNk"))
 
 # Ignore invalid characters and pad sequences
-print(binascii.a2b_base64(b'Zm9v\n'))
-print(binascii.a2b_base64(b'Zm\x009v\n'))
-print(binascii.a2b_base64(b'Zm9v=='))
-print(binascii.a2b_base64(b'Zm9v==='))
-print(binascii.a2b_base64(b'Zm9v===YmFy'))
+print(binascii.a2b_base64(b"Zm9v\n"))
+print(binascii.a2b_base64(b"Zm\x009v\n"))
+print(binascii.a2b_base64(b"Zm9v=="))
+print(binascii.a2b_base64(b"Zm9v==="))
+print(binascii.a2b_base64(b"Zm9v===YmFy"))
 
 try:
-    print(binascii.a2b_base64(b'abc'))
+    print(binascii.a2b_base64(b"abc"))
 except ValueError:
     print("ValueError")
 try:
-    print(binascii.a2b_base64(b'abcde='))
+    print(binascii.a2b_base64(b"abcde="))
 except ValueError:
     print("ValueError")
 try:
-    print(binascii.a2b_base64(b'ab*d'))
+    print(binascii.a2b_base64(b"ab*d"))
 except ValueError:
     print("ValueError")
 try:
-    print(binascii.a2b_base64(b'ab=cdef='))
+    print(binascii.a2b_base64(b"ab=cdef="))
 except ValueError:
     print("ValueError")

tests/extmod/ubinascii_b2a_base64.py

@@ -7,16 +7,16 @@ except ImportError:
     print("SKIP")
     raise SystemExit
 
-print(binascii.b2a_base64(b''))
-print(binascii.b2a_base64(b'f'))
-print(binascii.b2a_base64(b'fo'))
-print(binascii.b2a_base64(b'foo'))
-print(binascii.b2a_base64(b'foob'))
-print(binascii.b2a_base64(b'fooba'))
-print(binascii.b2a_base64(b'foobar'))
+print(binascii.b2a_base64(b""))
+print(binascii.b2a_base64(b"f"))
+print(binascii.b2a_base64(b"fo"))
+print(binascii.b2a_base64(b"foo"))
+print(binascii.b2a_base64(b"foob"))
+print(binascii.b2a_base64(b"fooba"))
+print(binascii.b2a_base64(b"foobar"))
 
-print(binascii.b2a_base64(b'\x00\x01\x02\x03\x04\x05\x06\x07'))
-print(binascii.b2a_base64(b'\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f'))
-print(binascii.b2a_base64(b'\x7f\x80\xff'))
-print(binascii.b2a_base64(b'1234ABCDabcd'))
-print(binascii.b2a_base64(b'\x00\x00>')) # convert into '+'
+print(binascii.b2a_base64(b"\x00\x01\x02\x03\x04\x05\x06\x07"))
+print(binascii.b2a_base64(b"\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"))
+print(binascii.b2a_base64(b"\x7f\x80\xff"))
+print(binascii.b2a_base64(b"1234ABCDabcd"))
+print(binascii.b2a_base64(b"\x00\x00>"))  # convert into '+'

tests/extmod/ubinascii_crc32.py

@@ -13,12 +13,12 @@ except AttributeError:
     print("SKIP")
     raise SystemExit
 
-print(hex(binascii.crc32(b'The quick brown fox jumps over the lazy dog')))
-print(hex(binascii.crc32(b'\x00' * 32)))
-print(hex(binascii.crc32(b'\xff' * 32)))
+print(hex(binascii.crc32(b"The quick brown fox jumps over the lazy dog")))
+print(hex(binascii.crc32(b"\x00" * 32)))
+print(hex(binascii.crc32(b"\xff" * 32)))
 print(hex(binascii.crc32(bytes(range(32)))))
 
-print(hex(binascii.crc32(b' over the lazy dog', binascii.crc32(b'The quick brown fox jumps'))))
-print(hex(binascii.crc32(b'\x00' * 16, binascii.crc32(b'\x00' * 16))))
-print(hex(binascii.crc32(b'\xff' * 16, binascii.crc32(b'\xff' * 16))))
+print(hex(binascii.crc32(b" over the lazy dog", binascii.crc32(b"The quick brown fox jumps"))))
+print(hex(binascii.crc32(b"\x00" * 16, binascii.crc32(b"\x00" * 16))))
+print(hex(binascii.crc32(b"\xff" * 16, binascii.crc32(b"\xff" * 16))))
 print(hex(binascii.crc32(bytes(range(16, 32)), binascii.crc32(bytes(range(16))))))

tests/extmod/ubinascii_hexlify.py

@@ -7,7 +7,7 @@ except ImportError:
     print("SKIP")
     raise SystemExit
 
-print(binascii.hexlify(b'\x00\x01\x02\x03\x04\x05\x06\x07'))
-print(binascii.hexlify(b'\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f'))
-print(binascii.hexlify(b'\x7f\x80\xff'))
-print(binascii.hexlify(b'1234ABCDabcd'))
+print(binascii.hexlify(b"\x00\x01\x02\x03\x04\x05\x06\x07"))
+print(binascii.hexlify(b"\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"))
+print(binascii.hexlify(b"\x7f\x80\xff"))
+print(binascii.hexlify(b"1234ABCDabcd"))

tests/extmod/ubinascii_micropython.py

@@ -8,8 +8,8 @@ except ImportError:
     raise SystemExit
 
 # two arguments supported in uPy but not CPython
-a = binascii.hexlify(b'123', ':')
+a = binascii.hexlify(b"123", ":")
 print(a)
 
 # zero length buffer
-print(binascii.hexlify(b'', b':'))
+print(binascii.hexlify(b"", b":"))

tests/extmod/ubinascii_unhexlify.py

@@ -7,17 +7,17 @@ except ImportError:
     print("SKIP")
     raise SystemExit
 
-print(binascii.unhexlify(b'0001020304050607'))
-print(binascii.unhexlify(b'08090a0b0c0d0e0f'))
-print(binascii.unhexlify(b'7f80ff'))
-print(binascii.unhexlify(b'313233344142434461626364'))
+print(binascii.unhexlify(b"0001020304050607"))
+print(binascii.unhexlify(b"08090a0b0c0d0e0f"))
+print(binascii.unhexlify(b"7f80ff"))
+print(binascii.unhexlify(b"313233344142434461626364"))
 
 try:
-    a = binascii.unhexlify(b'0') # odd buffer length
+    a = binascii.unhexlify(b"0")  # odd buffer length
 except ValueError:
-    print('ValueError')
+    print("ValueError")
 
 try:
-    a = binascii.unhexlify(b'gg') # digit not hex
+    a = binascii.unhexlify(b"gg")  # digit not hex
 except ValueError:
-    print('ValueError')
+    print("ValueError")

tests/extmod/ucryptolib_aes128_cbc.py

@@ -1,5 +1,6 @@
 try:
     from Crypto.Cipher import AES
+
     aes = AES.new
 except ImportError:
     try:

tests/extmod/ucryptolib_aes128_ctr.py

@@ -10,7 +10,7 @@ def _new(k, ctr_initial):
 
 
 try:
-    _new(b'x' * 16, b'x' * 16)
+    _new(b"x" * 16, b"x" * 16)
 except ValueError as e:
     # is CTR support disabled?
     if e.args[0] == "mode":
@@ -19,9 +19,9 @@ except ValueError as e:
     raise e
 
 crypto = _new(b"1234" * 4, b"5678" * 4)
-enc = crypto.encrypt(b'a')
+enc = crypto.encrypt(b"a")
 print(enc)
-enc += crypto.encrypt(b'b' * 1000)
+enc += crypto.encrypt(b"b" * 1000)
 print(enc)
 
 crypto = _new(b"1234" * 4, b"5678" * 4)

tests/extmod/ucryptolib_aes128_ecb.py

@@ -1,5 +1,6 @@
 try:
     from Crypto.Cipher import AES
+
     aes = AES.new
 except ImportError:
     try:

tests/extmod/ucryptolib_aes128_ecb_enc.py

@@ -3,6 +3,7 @@
 # is optional).
 try:
     from Crypto.Cipher import AES
+
     aes = AES.new
 except ImportError:
     try:

tests/extmod/ucryptolib_aes256_cbc.py

@@ -1,5 +1,6 @@
 try:
     from Crypto.Cipher import AES
+
     aes = AES.new
 except ImportError:
     try:

tests/extmod/ucryptolib_aes256_ecb.py

@@ -1,5 +1,6 @@
 try:
     from Crypto.Cipher import AES
+
     aes = AES.new
 except ImportError:
     try:

tests/extmod/uctypes_32bit_intbig.py

@@ -10,16 +10,16 @@ buf = b"12345678abcd"
 struct = uctypes.struct(
     uctypes.addressof(buf),
     {"f32": uctypes.UINT32 | 0, "f64": uctypes.UINT64 | 4},
-    uctypes.LITTLE_ENDIAN
+    uctypes.LITTLE_ENDIAN,
 )
 
-struct.f32 = 0x7fffffff
+struct.f32 = 0x7FFFFFFF
 print(buf)
 
 struct.f32 = 0x80000000
 print(buf)
 
-struct.f32 = 0xff010203
+struct.f32 = 0xFF010203
 print(buf)
 
 struct.f64 = 0x80000000
@@ -34,16 +34,16 @@ buf = b"12345678abcd"
 struct = uctypes.struct(
     uctypes.addressof(buf),
     {"f32": uctypes.UINT32 | 0, "f64": uctypes.UINT64 | 4},
-    uctypes.BIG_ENDIAN
+    uctypes.BIG_ENDIAN,
 )
 
-struct.f32 = 0x7fffffff
+struct.f32 = 0x7FFFFFFF
 print(buf)
 
 struct.f32 = 0x80000000
 print(buf)
 
-struct.f32 = 0xff010203
+struct.f32 = 0xFF010203
 print(buf)
 
 struct.f64 = 0x80000000

tests/extmod/uctypes_array_assign_le.py

@@ -10,14 +10,12 @@ desc = {
     # arr2 is array at offset 0, size 2, of structures defined recursively
     "arr2": (uctypes.ARRAY | 0, 2, {"b": uctypes.UINT8 | 0}),
     "arr3": (uctypes.ARRAY | 2, uctypes.UINT16 | 2),
-
     # aligned
     "arr5": (uctypes.ARRAY | 0, uctypes.UINT32 | 1),
     # unaligned
     "arr6": (uctypes.ARRAY | 1, uctypes.UINT32 | 1),
-
     "arr7": (uctypes.ARRAY | 0, 1, {"l": uctypes.UINT32 | 0}),
-    "arr8": (uctypes.ARRAY | 1, 1, {"l": uctypes.UINT32 | 0})
+    "arr8": (uctypes.ARRAY | 1, 1, {"l": uctypes.UINT32 | 0}),
 }
 
 data = bytearray(5)
@@ -55,4 +53,3 @@ assert hex(S.arr6[0]) == "0xaabbccdd"
 
 print(S.arr6[0] == S.arr8[0].l)
 assert S.arr6[0] == S.arr8[0].l
-

tests/extmod/uctypes_array_assign_native_le.py

@@ -1,4 +1,5 @@
 import sys
+
 try:
     import uctypes
 except ImportError:
@@ -15,11 +16,9 @@ desc = {
     # arr2 is array at offset 0, size 2, of structures defined recursively
     "arr2": (uctypes.ARRAY | 0, 2, {"b": uctypes.UINT8 | 0}),
     "arr3": (uctypes.ARRAY | 2, uctypes.UINT16 | 2),
-
     # aligned
     "arr5": (uctypes.ARRAY | 0, uctypes.UINT32 | 1),
     "arr7": (uctypes.ARRAY | 0, 1, {"l": uctypes.UINT32 | 0}),
-
     "arr8": (uctypes.ARRAY | 0, uctypes.INT8 | 1),
     "arr9": (uctypes.ARRAY | 0, uctypes.INT16 | 1),
     "arr10": (uctypes.ARRAY | 0, uctypes.INT32 | 1),

tests/extmod/uctypes_array_assign_native_le_intbig.py

@@ -1,4 +1,5 @@
 import sys
+
 try:
     import uctypes
 except ImportError:
@@ -15,11 +16,9 @@ desc = {
     # arr2 is array at offset 0, size 2, of structures defined recursively
     "arr2": (uctypes.ARRAY | 0, 2, {"b": uctypes.UINT8 | 0}),
     "arr3": (uctypes.ARRAY | 2, uctypes.UINT16 | 2),
-
     # aligned
     "arr5": (uctypes.ARRAY | 0, uctypes.UINT32 | 1),
     "arr7": (uctypes.ARRAY | 0, 1, {"l": uctypes.UINT32 | 0}),
-
     "arr8": (uctypes.ARRAY | 0, uctypes.INT8 | 1),
     "arr9": (uctypes.ARRAY | 0, uctypes.INT16 | 1),
     "arr10": (uctypes.ARRAY | 0, uctypes.INT32 | 1),

tests/extmod/uctypes_byteat.py

@@ -4,7 +4,7 @@ except ImportError:
     print("SKIP")
     raise SystemExit
 
-data = bytearray(b'01234567')
+data = bytearray(b"01234567")
 
 print(uctypes.bytes_at(uctypes.addressof(data), 4))
 print(uctypes.bytearray_at(uctypes.addressof(data), 4))

tests/extmod/uctypes_error.py

@@ -13,31 +13,31 @@ S = uctypes.struct(uctypes.addressof(data), {})
 try:
     del S[0]
 except TypeError:
-    print('TypeError')
+    print("TypeError")
 
 # list is an invalid descriptor
 S = uctypes.struct(uctypes.addressof(data), [])
 try:
     S.x
 except TypeError:
-    print('TypeError')
+    print("TypeError")
 
 # can't access attribute with invalid descriptor
-S = uctypes.struct(uctypes.addressof(data), {'x':[]})
+S = uctypes.struct(uctypes.addressof(data), {"x": []})
 try:
     S.x
 except TypeError:
-    print('TypeError')
+    print("TypeError")
 
 # can't assign to aggregate
-S = uctypes.struct(uctypes.addressof(data), {'x':(uctypes.ARRAY | 0, uctypes.INT8 | 2)})
+S = uctypes.struct(uctypes.addressof(data), {"x": (uctypes.ARRAY | 0, uctypes.INT8 | 2)})
 try:
     S.x = 1
 except TypeError:
-    print('TypeError')
+    print("TypeError")
 
 # unsupported unary op
 try:
     hash(S)
 except TypeError:
-    print('TypeError')
+    print("TypeError")

tests/extmod/uctypes_le.py

@@ -6,20 +6,15 @@ except ImportError:
 
 desc = {
     "s0": uctypes.UINT16 | 0,
-    "sub": (0, {
-        "b0": uctypes.UINT8 | 0,
-        "b1": uctypes.UINT8 | 1,
-    }),
+    "sub": (0, {"b0": uctypes.UINT8 | 0, "b1": uctypes.UINT8 | 1,}),
     "arr": (uctypes.ARRAY | 0, uctypes.UINT8 | 2),
     "arr2": (uctypes.ARRAY | 0, 2, {"b": uctypes.UINT8 | 0}),
     "bitf0": uctypes.BFUINT16 | 0 | 0 << uctypes.BF_POS | 8 << uctypes.BF_LEN,
     "bitf1": uctypes.BFUINT16 | 0 | 8 << uctypes.BF_POS | 8 << uctypes.BF_LEN,
-
     "bf0": uctypes.BFUINT16 | 0 | 0 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
     "bf1": uctypes.BFUINT16 | 0 | 4 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
     "bf2": uctypes.BFUINT16 | 0 | 8 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
     "bf3": uctypes.BFUINT16 | 0 | 12 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
-
     "ptr": (uctypes.PTR | 0, uctypes.UINT8),
     "ptr2": (uctypes.PTR | 0, {"b": uctypes.UINT8 | 0}),
 }
@@ -73,7 +68,7 @@ assert bytes(data) == b"2Q"
 
 desc2 = {
     "bf8": uctypes.BFUINT8 | 0 | 0 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
-    "bf32": uctypes.BFUINT32 | 0 | 20 << uctypes.BF_POS | 4 << uctypes.BF_LEN
+    "bf32": uctypes.BFUINT32 | 0 | 20 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
 }
 
 data2 = bytearray(b"0123")

tests/extmod/uctypes_le_float.py

@@ -15,10 +15,10 @@ data = bytearray(10)
 S = uctypes.struct(uctypes.addressof(data), desc, uctypes.LITTLE_ENDIAN)
 
 S.f32 = 12.34
-print('%.4f' % S.f32)
+print("%.4f" % S.f32)
 
 S.f64 = 12.34
-print('%.4f' % S.f64)
+print("%.4f" % S.f64)
 
 S.uf64 = 12.34
-print('%.4f' % S.uf64)
+print("%.4f" % S.uf64)

tests/extmod/uctypes_native_float.py

@@ -14,7 +14,7 @@ data = bytearray(8)
 S = uctypes.struct(uctypes.addressof(data), desc, uctypes.NATIVE)
 
 S.f32 = 12.34
-print('%.4f' % S.f32)
+print("%.4f" % S.f32)
 
 S.f64 = 12.34
-print('%.4f' % S.f64)
+print("%.4f" % S.f64)

tests/extmod/uctypes_native_le.py

@@ -2,6 +2,7 @@
 # Codepaths for packed vs native structures are different. This test only works
 # on little-endian machine (no matter if 32 or 64 bit).
 import sys
+
 try:
     import uctypes
 except ImportError:
@@ -15,20 +16,15 @@ if sys.byteorder != "little":
 
 desc = {
     "s0": uctypes.UINT16 | 0,
-    "sub": (0, {
-        "b0": uctypes.UINT8 | 0,
-        "b1": uctypes.UINT8 | 1,
-    }),
+    "sub": (0, {"b0": uctypes.UINT8 | 0, "b1": uctypes.UINT8 | 1,}),
     "arr": (uctypes.ARRAY | 0, uctypes.UINT8 | 2),
     "arr2": (uctypes.ARRAY | 0, 2, {"b": uctypes.UINT8 | 0}),
     "bitf0": uctypes.BFUINT16 | 0 | 0 << uctypes.BF_POS | 8 << uctypes.BF_LEN,
     "bitf1": uctypes.BFUINT16 | 0 | 8 << uctypes.BF_POS | 8 << uctypes.BF_LEN,
-
     "bf0": uctypes.BFUINT16 | 0 | 0 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
     "bf1": uctypes.BFUINT16 | 0 | 4 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
     "bf2": uctypes.BFUINT16 | 0 | 8 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
     "bf3": uctypes.BFUINT16 | 0 | 12 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
-
     "ptr": (uctypes.PTR | 0, uctypes.UINT8),
     "ptr2": (uctypes.PTR | 0, {"b": uctypes.UINT8 | 0}),
 }
@@ -81,7 +77,7 @@ assert bytes(data) == b"2Q"
 
 desc2 = {
     "bf8": uctypes.BFUINT8 | 0 | 0 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
-    "bf32": uctypes.BFUINT32 | 0 | 20 << uctypes.BF_POS | 4 << uctypes.BF_LEN
+    "bf32": uctypes.BFUINT32 | 0 | 20 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
 }
 
 data2 = bytearray(b"0123")

tests/extmod/uctypes_print.py

@@ -16,10 +16,10 @@ desc2 = [(uctypes.ARRAY | 0, uctypes.UINT8 | 1)]
 S2 = uctypes.struct(0, desc2)
 print(S2)
 
-desc3 = ((uctypes.ARRAY | 0, uctypes.UINT8 | 1))
+desc3 = (uctypes.ARRAY | 0, uctypes.UINT8 | 1)
 S3 = uctypes.struct(0, desc3)
 print(S3)
 
-desc4 = ((uctypes.PTR | 0, uctypes.UINT8 | 1))
+desc4 = (uctypes.PTR | 0, uctypes.UINT8 | 1)
 S4 = uctypes.struct(0, desc4)
 print(S4)

tests/extmod/uctypes_ptr_le.py

@@ -1,4 +1,5 @@
 import sys
+
 try:
     import uctypes
 except ImportError:

tests/extmod/uctypes_ptr_native_le.py

@@ -1,4 +1,5 @@
 import sys
+
 try:
     import uctypes
 except ImportError:

tests/extmod/uctypes_sizeof.py

@@ -11,10 +11,13 @@ desc = {
     "arr2": (uctypes.ARRAY | 0, 2, {"b": uctypes.UINT8 | 0}),
     "arr3": (uctypes.ARRAY | 2, uctypes.UINT16 | 2),
     "arr4": (uctypes.ARRAY | 0, 2, {"b": uctypes.UINT8 | 0, "w": uctypes.UINT16 | 1}),
-    "sub": (0, {
-        'b1': uctypes.BFUINT8 | 0 | 4 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
-        'b2': uctypes.BFUINT8 | 0 | 0 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
-    }),
+    "sub": (
+        0,
+        {
+            "b1": uctypes.BFUINT8 | 0 | 4 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
+            "b2": uctypes.BFUINT8 | 0 | 0 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
+        },
+    ),
 }
 
 data = bytearray(b"01234567")

tests/extmod/uctypes_sizeof_float.py

@@ -4,5 +4,5 @@ except ImportError:
     print("SKIP")
     raise SystemExit
 
-print(uctypes.sizeof({'f':uctypes.FLOAT32}))
-print(uctypes.sizeof({'f':uctypes.FLOAT64}))
+print(uctypes.sizeof({"f": uctypes.FLOAT32}))
+print(uctypes.sizeof({"f": uctypes.FLOAT64}))

tests/extmod/uctypes_sizeof_native.py

@@ -28,10 +28,7 @@ S5 = {
     "b": uctypes.UINT32 | 4,
     "c": uctypes.UINT8 | 8,
     "d": uctypes.UINT32 | 0,
-    "sub": (4, {
-        "b0": uctypes.UINT8 | 0,
-        "b1": uctypes.UINT8 | 1,
-    }),
+    "sub": (4, {"b0": uctypes.UINT8 | 0, "b1": uctypes.UINT8 | 1,}),
 }
 
 assert uctypes.sizeof(S5) == 12

tests/extmod/uctypes_sizeof_od.py

@@ -5,18 +5,23 @@ except ImportError:
     print("SKIP")
     raise SystemExit
 
-desc = OrderedDict({
+desc = OrderedDict(
+    {
         # arr is array at offset 0, of UINT8 elements, array size is 2
         "arr": (uctypes.ARRAY | 0, uctypes.UINT8 | 2),
         # arr2 is array at offset 0, size 2, of structures defined recursively
         "arr2": (uctypes.ARRAY | 0, 2, {"b": uctypes.UINT8 | 0}),
         "arr3": (uctypes.ARRAY | 2, uctypes.UINT16 | 2),
         "arr4": (uctypes.ARRAY | 0, 2, {"b": uctypes.UINT8 | 0, "w": uctypes.UINT16 | 1}),
-    "sub": (0, {
-        'b1': uctypes.BFUINT8 | 0 | 4 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
-        'b2': uctypes.BFUINT8 | 0 | 0 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
-    }),
-})
+        "sub": (
+            0,
+            {
+                "b1": uctypes.BFUINT8 | 0 | 4 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
+                "b2": uctypes.BFUINT8 | 0 | 0 << uctypes.BF_POS | 4 << uctypes.BF_LEN,
+            },
+        ),
+    }
+)
 
 data = bytearray(b"01234567")
 

tests/extmod/uhashlib_md5.py

@@ -16,6 +16,6 @@ except AttributeError:
     print("SKIP")
     raise SystemExit
 
-md5 = hashlib.md5(b'hello')
-md5.update(b'world')
+md5 = hashlib.md5(b"hello")
+md5.update(b"world")
 print(md5.digest())

tests/extmod/uhashlib_sha1.py

@@ -16,6 +16,6 @@ except AttributeError:
     print("SKIP")
     raise SystemExit
 
-sha1 = hashlib.sha1(b'hello')
-sha1.update(b'world')
+sha1 = hashlib.sha1(b"hello")
+sha1.update(b"world")
 print(sha1.digest())

tests/extmod/uheapq1.py

@@ -17,11 +17,13 @@ try:
 except TypeError:
     print("TypeError")
 
+
 def pop_and_print(h):
     l = []
     while h:
         l.append(str(heapq.heappop(h)))
-    print(' '.join(l))
+    print(" ".join(l))
+
 
 h = []
 heapq.heappush(h, 3)

tests/extmod/ujson_dump.py

@@ -21,10 +21,10 @@ print(s.getvalue())
 try:
     json.dump(123, 1)
 except (AttributeError, OSError):  # CPython and uPy have different errors
-    print('Exception')
+    print("Exception")
 
 # dump to an object not allowed
 try:
     json.dump(123, {})
 except (AttributeError, OSError):  # CPython and uPy have different errors
-    print('Exception')
+    print("Exception")

tests/extmod/ujson_dump_iobase.py

@@ -7,22 +7,23 @@ except ImportError:
     try:
         import io, json
     except ImportError:
-        print('SKIP')
+        print("SKIP")
         raise SystemExit
 
-if not hasattr(io, 'IOBase'):
-    print('SKIP')
+if not hasattr(io, "IOBase"):
+    print("SKIP")
     raise SystemExit
 
 
 # a user stream that only has the write method
 class S(io.IOBase):
     def __init__(self):
-        self.buf = ''
+        self.buf = ""
+
     def write(self, buf):
         if type(buf) == bytearray:
             # uPy passes a bytearray, CPython passes a str
-            buf = str(buf, 'ascii')
+            buf = str(buf, "ascii")
         self.buf += buf
         return len(buf)
 

tests/extmod/ujson_dumps.py

@@ -11,8 +11,8 @@ print(json.dumps(False))
 print(json.dumps(True))
 print(json.dumps(None))
 print(json.dumps(1))
-print(json.dumps('abc'))
-print(json.dumps('\x00\x01\x7e'))
+print(json.dumps("abc"))
+print(json.dumps("\x00\x01\x7e"))
 print(json.dumps([]))
 print(json.dumps([1]))
 print(json.dumps([1, 2]))
@@ -25,7 +25,7 @@ print(json.dumps({}))
 print(json.dumps({"a": 1}))
 print(json.dumps({"a": (2, [3, None])}))
 print(json.dumps('"quoted"'))
-print(json.dumps('space\n\r\tspace'))
+print(json.dumps("space\n\r\tspace"))
 print(json.dumps({None: -1}))
 print(json.dumps({False: 0}))
 print(json.dumps({True: 1}))

tests/extmod/ujson_dumps_extra.py

@@ -6,4 +6,4 @@ except ImportError:
     print("SKIP")
     raise SystemExit
 
-print(ujson.dumps(b'1234'))
+print(ujson.dumps(b"1234"))

tests/extmod/ujson_dumps_float.py

@@ -8,4 +8,4 @@ except ImportError:
         raise SystemExit
 
 print(json.dumps(1.2))
-print(json.dumps({1.5: 'hi'}))
+print(json.dumps({1.5: "hi"}))

tests/extmod/ujson_load.py

@@ -9,7 +9,7 @@ except:
         print("SKIP")
         raise SystemExit
 
-print(json.load(StringIO('null')))
+print(json.load(StringIO("null")))
 print(json.load(StringIO('"abc\\u0064e"')))
-print(json.load(StringIO('[false, true, 1, -2]')))
+print(json.load(StringIO("[false, true, 1, -2]")))
 print(json.load(StringIO('{"a":true}')))

tests/extmod/ujson_loads.py

@@ -7,23 +7,25 @@ except ImportError:
         print("SKIP")
         raise SystemExit
 
+
 def my_print(o):
     if isinstance(o, dict):
-        print('sorted dict', sorted(o.items()))
+        print("sorted dict", sorted(o.items()))
     else:
         print(o)
 
-my_print(json.loads('null'))
-my_print(json.loads('false'))
-my_print(json.loads('true'))
-my_print(json.loads('1'))
-my_print(json.loads('-2'))
+
+my_print(json.loads("null"))
+my_print(json.loads("false"))
+my_print(json.loads("true"))
+my_print(json.loads("1"))
+my_print(json.loads("-2"))
 my_print(json.loads('"abc\\u0064e"'))
-my_print(json.loads('[]'))
-my_print(json.loads('[null]'))
-my_print(json.loads('[null,false,true]'))
-my_print(json.loads(' [ null , false , true ] '))
-my_print(json.loads('{}'))
+my_print(json.loads("[]"))
+my_print(json.loads("[null]"))
+my_print(json.loads("[null,false,true]"))
+my_print(json.loads(" [ null , false , true ] "))
+my_print(json.loads("{}"))
 my_print(json.loads('{"a":true}'))
 my_print(json.loads('{"a":null, "b":false, "c":true}'))
 my_print(json.loads('{"a":[], "b":[1], "c":{"3":4}}'))
@@ -39,36 +41,36 @@ my_print(json.loads('{\n\t"a":[]\r\n, "b":[1], "c":{"3":4}     \n\r\t\r\r\r\n}')
 
 # loading nothing should raise exception
 try:
-    json.loads('')
+    json.loads("")
 except ValueError:
-    print('ValueError')
+    print("ValueError")
 
 # string which is not closed
 try:
     my_print(json.loads('"abc'))
 except ValueError:
-    print('ValueError')
+    print("ValueError")
 
 # unaccompanied closing brace
 try:
-    my_print(json.loads(']'))
+    my_print(json.loads("]"))
 except ValueError:
-    print('ValueError')
+    print("ValueError")
 
 # unspecified object type
 try:
-    my_print(json.loads('a'))
+    my_print(json.loads("a"))
 except ValueError:
-    print('ValueError')
+    print("ValueError")
 
 # bad property name
 try:
     my_print(json.loads('{{}:"abc"}'))
 except ValueError:
-    print('ValueError')
+    print("ValueError")
 
 # unexpected characters after white space
 try:
-    my_print(json.loads('[null]   a'))
+    my_print(json.loads("[null]   a"))
 except ValueError:
-    print('ValueError')
+    print("ValueError")

tests/extmod/ujson_loads_bytes.py

@@ -9,5 +9,5 @@ except ImportError:
         print("SKIP")
         raise SystemExit
 
-print(json.loads(b'[1,2]'))
-print(json.loads(bytearray(b'[null]')))
+print(json.loads(b"[1,2]"))
+print(json.loads(bytearray(b"[null]")))

tests/extmod/ujson_loads_float.py

@@ -7,12 +7,14 @@ except ImportError:
         print("SKIP")
         raise SystemExit
 
-def my_print(o):
-    print('%.3f' % o)
 
-my_print(json.loads('1.2'))
-my_print(json.loads('1e2'))
-my_print(json.loads('-2.3'))
-my_print(json.loads('-2e3'))
-my_print(json.loads('-2e+3'))
-my_print(json.loads('-2e-3'))
+def my_print(o):
+    print("%.3f" % o)
+
+
+my_print(json.loads("1.2"))
+my_print(json.loads("1e2"))
+my_print(json.loads("-2.3"))
+my_print(json.loads("-2e3"))
+my_print(json.loads("-2e+3"))
+my_print(json.loads("-2e-3"))

tests/extmod/urandom_basic.py

@@ -26,4 +26,4 @@ print(random.getrandbits(16) == r)
 try:
     random.getrandbits(0)
 except ValueError:
-    print('ValueError')
+    print("ValueError")

tests/extmod/urandom_extra.py

@@ -10,10 +10,10 @@ except ImportError:
 try:
     random.randint
 except AttributeError:
-    print('SKIP')
+    print("SKIP")
     raise SystemExit
 
-print('randrange')
+print("randrange")
 for i in range(50):
     assert 0 <= random.randrange(4) < 4
     assert 2 <= random.randrange(2, 6) < 6
@@ -25,27 +25,27 @@ for i in range(50):
 try:
     random.randrange(0)
 except ValueError:
-    print('ValueError')
+    print("ValueError")
 
 # empty range
 try:
     random.randrange(2, 1)
 except ValueError:
-    print('ValueError')
+    print("ValueError")
 
 # zero step
 try:
     random.randrange(2, 1, 0)
 except ValueError:
-    print('ValueError')
+    print("ValueError")
 
 # empty range
 try:
     random.randrange(2, 1, 1)
 except ValueError:
-    print('ValueError')
+    print("ValueError")
 
-print('randint')
+print("randint")
 for i in range(50):
     assert 0 <= random.randint(0, 4) <= 4
     assert 2 <= random.randint(2, 6) <= 6
@@ -55,9 +55,9 @@ for i in range(50):
 try:
     random.randint(2, 1)
 except ValueError:
-    print('ValueError')
+    print("ValueError")
 
-print('choice')
+print("choice")
 lst = [1, 2, 5, 6]
 for i in range(50):
     assert random.choice(lst) in lst
@@ -66,4 +66,4 @@ for i in range(50):
 try:
     random.choice([])
 except IndexError:
-    print('IndexError')
+    print("IndexError")

tests/extmod/urandom_extra_float.py

@@ -10,14 +10,14 @@ except ImportError:
 try:
     random.randint
 except AttributeError:
-    print('SKIP')
+    print("SKIP")
     raise SystemExit
 
-print('random')
+print("random")
 for i in range(50):
     assert 0 <= random.random() < 1
 
-print('uniform')
+print("uniform")
 for i in range(50):
     assert 0 <= random.uniform(0, 4) <= 4
     assert 2 <= random.uniform(2, 6) <= 6

tests/extmod/ure1.py

@@ -70,11 +70,16 @@ print(m.group(0))
 m = re.search("w.r", "hello world")
 print(m.group(0))
 
-m = re.match('a+?', 'ab');  print(m.group(0))
-m = re.match('a*?', 'ab');  print(m.group(0))
-m = re.match('^ab$', 'ab'); print(m.group(0))
-m = re.match('a|b', 'b');   print(m.group(0))
-m = re.match('a|b|c', 'c'); print(m.group(0))
+m = re.match("a+?", "ab")
+print(m.group(0))
+m = re.match("a*?", "ab")
+print(m.group(0))
+m = re.match("^ab$", "ab")
+print(m.group(0))
+m = re.match("a|b", "b")
+print(m.group(0))
+m = re.match("a|b|c", "c")
+print(m.group(0))
 
 # Case where anchors fail to match
 r = re.compile("^b|b$")
@@ -87,24 +92,36 @@ except:
     print("Caught invalid regex")
 
 # bytes objects
-m = re.match(rb'a+?', b'ab');  print(m.group(0))
+m = re.match(rb"a+?", b"ab")
+print(m.group(0))
 print("===")
 
 # escaping
-m = re.match(r'a\.c', 'a.c'); print(m.group(0) if m else '')
-m = re.match(r'a\.b', 'abc'); print(m is None)
-m = re.match(r'a\.b', 'a\\bc'); print(m is None)
-m = re.match(r'[a\-z]', 'abc'); print(m.group(0))
-m = re.match(r'[.\]]*', '.].]a'); print(m.group(0))
-m = re.match(r'[.\]+]*', '.]+.]a'); print(m.group(0))
-m = re.match(r'[a-f0-9x\-yz]*', 'abxcd1-23'); print(m.group(0))
-m = re.match(r'[a\\b]*', 'a\\aa\\bb\\bbab'); print(m.group(0))
-m = re.search(r'[a\-z]', '-'); print(m.group(0))
-m = re.search(r'[a\-z]', 'f'); print(m is None)
-m = re.search(r'[a\]z]', 'a'); print(m.group(0))
-print(re.compile(r'[-a]').split('foo-bar'))
-print(re.compile(r'[a-]').split('foo-bar'))
-print(re.compile(r'[ax\-]').split('foo-bar'))
-print(re.compile(r'[a\-x]').split('foo-bar'))
-print(re.compile(r'[\-ax]').split('foo-bar'))
+m = re.match(r"a\.c", "a.c")
+print(m.group(0) if m else "")
+m = re.match(r"a\.b", "abc")
+print(m is None)
+m = re.match(r"a\.b", "a\\bc")
+print(m is None)
+m = re.match(r"[a\-z]", "abc")
+print(m.group(0))
+m = re.match(r"[.\]]*", ".].]a")
+print(m.group(0))
+m = re.match(r"[.\]+]*", ".]+.]a")
+print(m.group(0))
+m = re.match(r"[a-f0-9x\-yz]*", "abxcd1-23")
+print(m.group(0))
+m = re.match(r"[a\\b]*", "a\\aa\\bb\\bbab")
+print(m.group(0))
+m = re.search(r"[a\-z]", "-")
+print(m.group(0))
+m = re.search(r"[a\-z]", "f")
+print(m is None)
+m = re.search(r"[a\]z]", "a")
+print(m.group(0))
+print(re.compile(r"[-a]").split("foo-bar"))
+print(re.compile(r"[a-]").split("foo-bar"))
+print(re.compile(r"[ax\-]").split("foo-bar"))
+print(re.compile(r"[a\-x]").split("foo-bar"))
+print(re.compile(r"[\-ax]").split("foo-bar"))
 print("===")

tests/extmod/ure_debug.py

@@ -1,9 +1,10 @@
 # test printing debugging info when compiling
 try:
     import ure
+
     ure.DEBUG
 except (ImportError, AttributeError):
     print("SKIP")
     raise SystemExit
 
-ure.compile('^a|b[0-9]\w$', ure.DEBUG)
+ure.compile("^a|b[0-9]\w$", ure.DEBUG)

tests/extmod/ure_error.py

@@ -9,6 +9,7 @@ except ImportError:
         print("SKIP")
         raise SystemExit
 
+
 def test_re(r):
     try:
         re.compile(r)
@@ -16,11 +17,12 @@ def test_re(r):
     except:  # uPy and CPy use different errors, so just ignore the type
         print("Error")
 
-test_re(r'?')
-test_re(r'*')
-test_re(r'+')
-test_re(r')')
-test_re(r'[')
-test_re(r'([')
-test_re(r'([)')
-test_re(r'[a\]')
+
+test_re(r"?")
+test_re(r"*")
+test_re(r"+")
+test_re(r")")
+test_re(r"[")
+test_re(r"([")
+test_re(r"([)")
+test_re(r"[a\]")

tests/extmod/ure_group.py

@@ -9,8 +9,9 @@ except ImportError:
         print("SKIP")
         raise SystemExit
 
+
 def print_groups(match):
-    print('----')
+    print("----")
     try:
         i = 0
         while True:
@@ -19,14 +20,15 @@ def print_groups(match):
     except IndexError:
         pass
 
-m = re.match(r'(([0-9]*)([a-z]*)[0-9]*)','1234hello567')
+
+m = re.match(r"(([0-9]*)([a-z]*)[0-9]*)", "1234hello567")
 print_groups(m)
 
-m = re.match(r'([0-9]*)(([a-z]*)([0-9]*))','1234hello567')
+m = re.match(r"([0-9]*)(([a-z]*)([0-9]*))", "1234hello567")
 print_groups(m)
 
 # optional group that matches
-print_groups(re.match(r'(a)?b(c)', 'abc'))
+print_groups(re.match(r"(a)?b(c)", "abc"))
 
 # optional group that doesn't match
-print_groups(re.match(r'(a)?b(c)', 'bc'))
+print_groups(re.match(r"(a)?b(c)", "bc"))

tests/extmod/ure_groups.py

@@ -13,21 +13,21 @@ try:
     m = re.match(".", "a")
     m.groups
 except AttributeError:
-    print('SKIP')
+    print("SKIP")
     raise SystemExit
 
 
-m = re.match(r'(([0-9]*)([a-z]*)[0-9]*)','1234hello567')
+m = re.match(r"(([0-9]*)([a-z]*)[0-9]*)", "1234hello567")
 print(m.groups())
 
-m = re.match(r'([0-9]*)(([a-z]*)([0-9]*))','1234hello567')
+m = re.match(r"([0-9]*)(([a-z]*)([0-9]*))", "1234hello567")
 print(m.groups())
 
 # optional group that matches
-print(re.match(r'(a)?b(c)', 'abc').groups())
+print(re.match(r"(a)?b(c)", "abc").groups())
 
 # optional group that doesn't match
-print(re.match(r'(a)?b(c)', 'bc').groups())
+print(re.match(r"(a)?b(c)", "bc").groups())
 
 # only a single match
-print(re.match(r'abc', 'abc').groups())
+print(re.match(r"abc", "abc").groups())

tests/extmod/ure_namedclass.py

@@ -9,8 +9,9 @@ except ImportError:
         print("SKIP")
         raise SystemExit
 
+
 def print_groups(match):
-    print('----')
+    print("----")
     try:
         i = 0
         while True:
@@ -19,14 +20,15 @@ def print_groups(match):
     except IndexError:
         pass
 
-m = re.match(r'\w+','1234hello567 abc')
+
+m = re.match(r"\w+", "1234hello567 abc")
 print_groups(m)
 
-m = re.match(r'(\w+)\s+(\w+)','ABC \t1234hello567 abc')
+m = re.match(r"(\w+)\s+(\w+)", "ABC \t1234hello567 abc")
 print_groups(m)
 
-m = re.match(r'(\S+)\s+(\D+)','ABC \thello abc567 abc')
+m = re.match(r"(\S+)\s+(\D+)", "ABC \thello abc567 abc")
 print_groups(m)
 
-m = re.match(r'(([0-9]*)([a-z]*)\d*)','1234hello567')
+m = re.match(r"(([0-9]*)([a-z]*)\d*)", "1234hello567")
 print_groups(m)

tests/extmod/ure_span.py

@@ -13,12 +13,12 @@ try:
     m = re.match(".", "a")
     m.span
 except AttributeError:
-    print('SKIP')
+    print("SKIP")
     raise SystemExit
 
 
 def print_spans(match):
-    print('----')
+    print("----")
     try:
         i = 0
         while True:
@@ -27,14 +27,15 @@ def print_spans(match):
     except IndexError:
         pass
 
-m = re.match(r'(([0-9]*)([a-z]*)[0-9]*)','1234hello567')
+
+m = re.match(r"(([0-9]*)([a-z]*)[0-9]*)", "1234hello567")
 print_spans(m)
 
-m = re.match(r'([0-9]*)(([a-z]*)([0-9]*))','1234hello567')
+m = re.match(r"([0-9]*)(([a-z]*)([0-9]*))", "1234hello567")
 print_spans(m)
 
 # optional span that matches
-print_spans(re.match(r'(a)?b(c)', 'abc'))
+print_spans(re.match(r"(a)?b(c)", "abc"))
 
 # optional span that doesn't match
-print_spans(re.match(r'(a)?b(c)', 'bc'))
+print_spans(re.match(r"(a)?b(c)", "bc"))