bpo-37685: Fixed comparisons of datetime.timedelta and datetime.timezone. (GH-14996)

There was a discrepancy between the Python and C implementations.

Add singletons ALWAYS_EQ, LARGEST and SMALLEST in test.support
to test mixed type comparison.
This commit is contained in:
Serhiy Storchaka 2019-08-04 12:38:46 +03:00 committed by GitHub
parent 5c72badd06
commit 17e52649c0
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7 changed files with 107 additions and 84 deletions

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@ -113,6 +113,7 @@ __all__ = [
"run_with_locale", "swap_item",
"swap_attr", "Matcher", "set_memlimit", "SuppressCrashReport", "sortdict",
"run_with_tz", "PGO", "missing_compiler_executable", "fd_count",
"ALWAYS_EQ", "LARGEST", "SMALLEST"
]
class Error(Exception):
@ -3103,6 +3104,41 @@ class FakePath:
return self.path
class _ALWAYS_EQ:
"""
Object that is equal to anything.
"""
def __eq__(self, other):
return True
def __ne__(self, other):
return False
ALWAYS_EQ = _ALWAYS_EQ()
@functools.total_ordering
class _LARGEST:
"""
Object that is greater than anything (except itself).
"""
def __eq__(self, other):
return isinstance(other, _LARGEST)
def __lt__(self, other):
return False
LARGEST = _LARGEST()
@functools.total_ordering
class _SMALLEST:
"""
Object that is less than anything (except itself).
"""
def __eq__(self, other):
return isinstance(other, _SMALLEST)
def __gt__(self, other):
return False
SMALLEST = _SMALLEST()
def maybe_get_event_loop_policy():
"""Return the global event loop policy if one is set, else return None."""
return asyncio.events._event_loop_policy