Python正则表达式在文件行开头搜索字符串

使用Python正则表达式在文件行开头搜索字符串

python
import re
def search_string(file_path, pattern):
    with open(file_path, 'r') as file:
        for line in file:
            if re.match(pattern, line):
                print(line)
# 示例用法
file_path = 'example.txt'
pattern = r'^Hello'
search_string(file_path, pattern)