Lichen

lib/operator/comparison.py

601:adcdaeb19307
2017-02-19 Paul Boddie Fixed the context test and set operation to replace the local context with any applicable attribute context. Added a test of method rebinding that requires this fix. method-wrapper-for-context
     1 #!/usr/bin/env python     2      3 """     4 Operator support.     5      6 Copyright (C) 2010, 2013, 2015, 2016 Paul Boddie <paul@boddie.org.uk>     7      8 This program is free software; you can redistribute it and/or modify it under     9 the terms of the GNU General Public License as published by the Free Software    10 Foundation; either version 3 of the License, or (at your option) any later    11 version.    12     13 This program is distributed in the hope that it will be useful, but WITHOUT    14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS    15 FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more    16 details.    17     18 You should have received a copy of the GNU General Public License along with    19 this program.  If not, see <http://www.gnu.org/licenses/>.    20 """    21     22 from operator.core import binary_op    23     24 # These functions defer method lookup by wrapping the attribute access in    25 # lambda functions. Thus, the appropriate methods are defined locally, but no    26 # attempt to obtain them is made until the generic function is called.    27     28 # Comparison functions.    29     30 def eq(a, b):    31     return binary_op(a, b, lambda a: a.__eq__, lambda b: b.__eq__, False)    32     33 def ge(a, b):    34     return binary_op(a, b, lambda a: a.__ge__, lambda b: b.__le__)    35     36 def gt(a, b):    37     return binary_op(a, b, lambda a: a.__gt__, lambda b: b.__lt__)    38     39 def le(a, b):    40     return binary_op(a, b, lambda a: a.__le__, lambda b: b.__ge__)    41     42 def lt(a, b):    43     return binary_op(a, b, lambda a: a.__lt__, lambda b: b.__gt__)    44     45 def ne(a, b):    46     return binary_op(a, b, lambda a: a.__ne__, lambda b: b.__ne__, True)    47     48 # vim: tabstop=4 expandtab shiftwidth=4