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3c93b5600f
* Bump dnspython from 2.0.0 to 2.2.0 Bumps [dnspython]() from 2.0.0 to 2.2.0. --- updated-dependencies: - dependency-name: dnspython dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> * Update dnspython==2.2.0 Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: JonnyWong16 <9099342+JonnyWong16@users.noreply.github.com> [skip ci]
71 lines
2.0 KiB
Python
71 lines
2.0 KiB
Python
# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
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import collections.abc
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import sys
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# pylint: disable=unused-import
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if sys.version_info >= (3, 7):
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odict = dict
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from dns._immutable_ctx import immutable
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else:
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# pragma: no cover
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from collections import OrderedDict as odict
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from dns._immutable_attr import immutable # noqa
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# pylint: enable=unused-import
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@immutable
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class Dict(collections.abc.Mapping):
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def __init__(self, dictionary, no_copy=False):
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"""Make an immutable dictionary from the specified dictionary.
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If *no_copy* is `True`, then *dictionary* will be wrapped instead
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of copied. Only set this if you are sure there will be no external
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references to the dictionary.
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"""
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if no_copy and isinstance(dictionary, odict):
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self._odict = dictionary
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else:
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self._odict = odict(dictionary)
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self._hash = None
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def __getitem__(self, key):
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return self._odict.__getitem__(key)
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def __hash__(self): # pylint: disable=invalid-hash-returned
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if self._hash is None:
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h = 0
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for key in sorted(self._odict.keys()):
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h ^= hash(key)
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object.__setattr__(self, '_hash', h)
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# this does return an int, but pylint doesn't figure that out
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return self._hash
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def __len__(self):
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return len(self._odict)
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def __iter__(self):
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return iter(self._odict)
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def constify(o):
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"""
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Convert mutable types to immutable types.
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"""
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if isinstance(o, bytearray):
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return bytes(o)
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if isinstance(o, tuple):
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try:
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hash(o)
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return o
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except Exception:
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return tuple(constify(elt) for elt in o)
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if isinstance(o, list):
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return tuple(constify(elt) for elt in o)
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if isinstance(o, dict):
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cdict = odict()
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for k, v in o.items():
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cdict[k] = constify(v)
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return Dict(cdict, True)
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return o
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