32 lines
996 B
Python
32 lines
996 B
Python
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"""Objects shared by opc modules."""
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from __future__ import annotations
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from typing import Any, Dict, TypeVar
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_T = TypeVar("_T")
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class CaseInsensitiveDict(Dict[str, Any]):
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"""Mapping type that behaves like dict except that it matches without respect to the
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case of the key.
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E.g. cid['A'] == cid['a']. Note this is not general-purpose, just complete enough to
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satisfy opc package needs. It assumes str keys, and that it is created empty; keys
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passed in constructor are not accounted for
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"""
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def __contains__(self, key):
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return super(CaseInsensitiveDict, self).__contains__(key.lower())
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def __getitem__(self, key):
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return super(CaseInsensitiveDict, self).__getitem__(key.lower())
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def __setitem__(self, key, value):
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return super(CaseInsensitiveDict, self).__setitem__(key.lower(), value)
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def cls_method_fn(cls: type, method_name: str):
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"""Return method of `cls` having `method_name`."""
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return getattr(cls, method_name)
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