正则表达式匹配具有偶数引号的字符串

import re

def match_even_quotes(string):
    pattern = r'^[^"]*("[^"]*"[^"]*)*$'
    return bool(re.match(pattern, string))

string1 = 'This is a string with "even" quotes.'
string2 = 'This is a string with "odd" quotes.'

print(match_even_quotes(string1))  # True
print(match_even_quotes(string2))  # False

This is a string with "even" quotes.
This is a string with "even" quotes and "even" quotes.

This is a string with "odd" quotes.
This is a string with "even" quotes and "odd" quotes.