python全文件搜索替换

你可以使用Python内置的os和re模块进行全文件搜索和替换。以下是一个简单的示例代码：

import os
import re

def replace_in_file(file_path, search_pattern, replace_pattern):
    with open(file_path, 'r') as f:
        content = f.read()
    content = re.sub(search_pattern, replace_pattern, content)
    with open(file_path, 'w') as f:
        f.write(content)

def replace_in_directory(directory_path, search_pattern, replace_pattern):
    for root, dirs, files in os.walk(directory_path):
        for file in files:
            file_path = os.path.join(root, file)
            replace_in_file(file_path, search_pattern, replace_pattern)

# 示例：将目录下所有文件中的"old_string"替换为"new_string"
replace_in_directory('/path/to/directory', r'old_string', r'new_string')

在此示例中，`replace_in_file`函数用于替换单个文件中的文本，`replace_in_directory`函数用于遍历指定目录中的所有文件并调用`replace_in_file`进行替换。你可以根据需要修改搜索和替换的正则表达式。