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circuitpython/tests/basics/memoryview2.py

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py/objstr: Binary type of str/bytes for buffer protocol is 'B'. The type is an unsigned 8-bit value, since bytes objects are exactly that. And it's also sensible for unicode strings to return unsigned values when accessed in a byte-wise manner (CPython does not allow this).
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# test memoryview accessing maximum values for signed/unsigned elements
tests/basic/: Make various tests skippable. To run the testsuite on small ports.
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try:
memoryview
except:
print("SKIP")
tests/basics: Convert "sys.exit()" to "raise SystemExit".
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raise SystemExit
tests: Rename "array" module to "uarray".
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try:
tests: Replace umodule with module everywhere. This work was funded through GitHub Sponsors. Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
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from array import array
tests: Rename "array" module to "uarray".
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except ImportError:
tests: Replace umodule with module everywhere. This work was funded through GitHub Sponsors. Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
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print("SKIP")
raise SystemExit
py/objstr: Binary type of str/bytes for buffer protocol is 'B'. The type is an unsigned 8-bit value, since bytes objects are exactly that. And it's also sensible for unicode strings to return unsigned values when accessed in a byte-wise manner (CPython does not allow this).
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print(list(memoryview(b'\x7f\x80\x81\xff')))
print(list(memoryview(array('b', [0x7f, -0x80]))))
print(list(memoryview(array('B', [0x7f, 0x80, 0x81, 0xff]))))
print(list(memoryview(array('h', [0x7f00, -0x8000]))))
print(list(memoryview(array('H', [0x7f00, 0x8000, 0x8100, 0xffff]))))