Replacing Invalid Characters as File Paths in Windows

sample.py

from .util import replace_invalid_char

extension_map = {
    "&": "＆",
    "(": "（",
    ")": "）",
    "[": "［",
    "]": "］",
    "{": "｛",
    "}": "｝",
    "^": "＾",
    "=": "＝",
    ";": "；",
    "!": "！",
    "'": "’",
    "+": "＋",
    ",": "，",
    "`": "‘",
    "~": "～",
    "#": "＃",
    "%": "％",
    ".": "．",
    "$": "＄",
    # " ": "　",
}

sample1 = "[TAG] sample! & sample?"
print(replace_invalid_char(sample1))
# [TAG] sample! & sample？
print(replace_invalid_char(sample1, extension_map))
# ［TAG］ sample！ ＆ sample？

util.py

_default_invalid_char_map = {
    "\\": "￥",
    "/": "／",
    ":": "：",
    "*": "＊",
    "?": "？",
    '"': "”",
    ">": "＞",
    "<": "＜",
    "|": "｜",
}


def replace_invalid_char(text: str, ext: dict[str, str] = None):
    if ext:
        char_map = dict(**_default_invalid_char_map, **ext)
    else:
        char_map = dict(**_default_invalid_char_map)
    trantable = str.maketrans(char_map)
    return text.translate(trantable)