def split_arg_string(string):
    """Given an argument string this attempts to split it into small parts."""
    rv = []
    for match in re.finditer(
        r"('([^'\\]*(?:\\.[^'\\]*)*)'|\"([^\"\\]*(?:\\.[^\"\\]*)*)\"|\S+)\s*",
        string,
        re.S,
    ):
        arg = match.group().strip()
        if arg[:1] == arg[-1:] and arg[:1] in "\"'":
            arg = arg[1:-1].encode("ascii", "backslashreplace").decode("unicode-escape")
        try:
            arg = type(string)(arg)
        except UnicodeError:
            pass
        rv.append(arg)
    return rv
Given an argument string this attempts to split it into small parts.
dynaconf/vendor/click/parser.py