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cb1a5c9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | """Objects shared by opc modules."""
from __future__ import annotations
from typing import Any, Dict, TypeVar
_T = TypeVar("_T")
class CaseInsensitiveDict(Dict[str, Any]):
"""Mapping type that behaves like dict except that it matches without respect to the
case of the key.
E.g. cid['A'] == cid['a']. Note this is not general-purpose, just complete enough to
satisfy opc package needs. It assumes str keys, and that it is created empty; keys
passed in constructor are not accounted for
"""
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)
def cls_method_fn(cls: type, method_name: str):
"""Return method of `cls` having `method_name`."""
return getattr(cls, method_name)
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