mirror of
https://github.com/morpheus65535/bazarr
synced 2024-12-27 01:57:33 +00:00
38 lines
1.9 KiB
Python
38 lines
1.9 KiB
Python
"""
|
|
For Python < 2.7.2. total_ordering in versions prior to 2.7.2 is buggy.
|
|
See http://bugs.python.org/issue10042 for details. For these versions use
|
|
code borrowed from Python 2.7.3.
|
|
|
|
From django.utils.
|
|
"""
|
|
|
|
import sys
|
|
if sys.version_info >= (2, 7, 2):
|
|
from functools import total_ordering
|
|
else:
|
|
def total_ordering(cls):
|
|
"""Class decorator that fills in missing ordering methods"""
|
|
convert = {
|
|
'__lt__': [('__gt__', lambda self, other: not (self < other or self == other)),
|
|
('__le__', lambda self, other: self < other or self == other),
|
|
('__ge__', lambda self, other: not self < other)],
|
|
'__le__': [('__ge__', lambda self, other: not self <= other or self == other),
|
|
('__lt__', lambda self, other: self <= other and not self == other),
|
|
('__gt__', lambda self, other: not self <= other)],
|
|
'__gt__': [('__lt__', lambda self, other: not (self > other or self == other)),
|
|
('__ge__', lambda self, other: self > other or self == other),
|
|
('__le__', lambda self, other: not self > other)],
|
|
'__ge__': [('__le__', lambda self, other: (not self >= other) or self == other),
|
|
('__gt__', lambda self, other: self >= other and not self == other),
|
|
('__lt__', lambda self, other: not self >= other)]
|
|
}
|
|
roots = set(dir(cls)) & set(convert)
|
|
if not roots:
|
|
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]:
|
|
if opname not in roots:
|
|
opfunc.__name__ = opname
|
|
opfunc.__doc__ = getattr(int, opname).__doc__
|
|
setattr(cls, opname, opfunc)
|
|
return cls
|