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""" Compatibility functions for utils """ import copy import importlib import sys import types 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__, pack_self="__utils__") ) 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) pre_dispatch = copy._deepcopy_dispatch try: 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. """ if isinstance(x, dict) and isinstance(y, dict): return 0 if x == y else -1 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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