python_const_0.py

"""
Constant types in Python.

e.g., http://code.activestate.com/recipes/414140-constant-types-in-python/
"""

import sys

class _const:
    class ConstError(TypeError):
        pass

    def __setattr__(self, name, value):
        if name in self.__dict__:
            # raise self.ConstError(f"Can't rebind const {name}")
            sys.stderr.write(f"Can't rebind const {name}\n")
            exit(0)
        self.__dict__[name] = value

import sys
sys.modules[__name__] = _const()

ブログで作成しました。

【Python】プログラム中に定数を扱う注意点
https://neko-py.com/python-constants