Current File : //lib/python2.7/site-packages/salt/utils/compat.py
# -*- coding: utf-8 -*-
'''
Compatibility functions for utils
'''
# Import python libs
from __future__ import absolute_import, print_function, unicode_literals
import sys
import copy
import types
import importlib
# Import salt libs
import salt.loader
def pack_dunder(name):
'''
Compatibility helper function to make __utils__ available on demand.
'''
# TODO: Deprecate starting with Beryllium
mod = sys.modules[name]
if not hasattr(mod, '__utils__'):
setattr(mod, '__utils__', salt.loader.utils(mod.__opts__))
def deepcopy_bound(name):
'''
Compatibility helper function to allow copy.deepcopy copy bound methods
which is broken on Python 2.6, due to the following bug:
https://bugs.python.org/issue1515
Warnings:
- This method will mutate the global deepcopy dispatcher, which means that
this function is NOT threadsafe!
- Not Py3 compatible. The intended use case is deepcopy compat for Py2.6
'''
def _deepcopy_method(x, memo):
return type(x)(x.im_func, copy.deepcopy(x.im_self, memo), x.im_class) # pylint: disable=incompatible-py3-code
try:
pre_dispatch = copy._deepcopy_dispatch
copy._deepcopy_dispatch[types.MethodType] = _deepcopy_method
ret = copy.deepcopy(name)
finally:
copy._deepcopy_dispatch = pre_dispatch
return ret
def cmp(x, y):
'''
Compatibility helper function to replace the ``cmp`` function from Python 2. The
``cmp`` function is no longer available in Python 3.
cmp(x, y) -> integer
Return negative if x<y, zero if x==y, positive if x>y.
'''
return (x > y) - (x < y)
def reload(mod):
'''
Compatibility helper function to replace the ``reload`` builtin from Python 2.
'''
try:
return importlib.reload(mod)
except AttributeError:
return reload(mod)
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