如何检查字符是否不是字符串中数字或URL的一部分？

import re

def is_not_digit_or_url_part(character):
    pattern = r"[^0-9a-zA-Z:/?=&.%_-]"
    match = re.search(pattern, character)
    return match is not None

print(is_not_digit_or_url_part('a'))  # False
print(is_not_digit_or_url_part('1'))  # False
print(is_not_digit_or_url_part(':'))  # False
print(is_not_digit_or_url_part('$'))  # True
print(is_not_digit_or_url_part(' '))  # True
print(is_not_digit_or_url_part('%'))  # False