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"""Objects shared by modules in the pptx.opc sub-package."""
from __future__ import annotations
class CaseInsensitiveDict(dict):
"""Mapping type like dict except it matches key without respect to case.
For example, D['A'] == D['a']. Note this is not general-purpose, just complete
enough to satisfy opc package needs. It assumes str keys for example.
"""
def __contains__(self, key):
return super(CaseInsensitiveDict, self).__contains__(key.lower())
def __getitem__(self, key):
return super(CaseInsensitiveDict, self).__getitem__(key.lower())
def __setitem__(self, key, value):
return super(CaseInsensitiveDict, self).__setitem__(key.lower(), value)
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