circuitpython/tests/cpydiff/core_class_mro.py
David Lechner 3dc324d3f1 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.
2020-03-30 13:21:58 +11:00

20 lines
457 B
Python

"""
categories: Core,Classes
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)