如何解析字符串，提取键值形式的数据？

import re

def parse_string(input_string):
    result = {}
    lines = input_string.split('\n')  # 按照换行符分割字符串
    for line in lines:
        match = re.match(r'(\w+)\s*=\s*(\w+)', line)  # 使用正则表达式匹配键值对
        if match:
            key = match.group(1)
            value = match.group(2)
            result[key] = value
    return result

# 示例输入字符串
input_string = '''
name = John
age = 25
city = New York
'''

# 解析字符串并提取键值对
output = parse_string(input_string)

# 打印提取结果
for key, value in output.items():
    print(key, '=', value)

name = John
age = 25
city = New York