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Issue 8361: Remove assert from functools.total_ordering

This commit is contained in:
Raymond Hettinger 2010-04-10 16:59:03 +00:00
parent c075f07a97
commit 56de7e2a36
1 changed files with 3 additions and 2 deletions
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5
Lib/functools.py
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@ -67,8 +67,9 @@ def total_ordering(cls):
('__lt__', lambda self, other: not self >= other)] ('__lt__', lambda self, other: not self >= other)]
} }
roots = set(dir(cls)) & set(convert) roots = set(dir(cls)) & set(convert)
assert roots, 'must define at least one ordering operation: < > <= >=' if not roots:
root = max(roots) # prefer __lt __ to __le__ to __gt__ to __ge__ raise ValueError('must define at least one ordering operation: < > <= >=')
root = max(roots) # prefer __lt__ to __le__ to __gt__ to __ge__
for opname, opfunc in convert[root]: for opname, opfunc in convert[root]:
if opname not in roots: if opname not in roots:
opfunc.__name__ = opname opfunc.__name__ = opname