diff --git a/rq/queue.py b/rq/queue.py index f359595..a8c27d4 100644 --- a/rq/queue.py +++ b/rq/queue.py @@ -1,9 +1,36 @@ import times -from functools import total_ordering from .connections import get_current_connection from .job import Job from .exceptions import NoSuchJobError, UnpickleError, InvalidJobOperationError +""" Backport to work with Python 2.6 """ +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 + def get_failed_queue(connection=None): """Returns a handle to the special failed queue."""