替换所有txt文件中的字符

import os

def replace_chars_in_txt_files(directory, old_char, new_char):
    for root, dirs, files in os.walk(directory):
        for file in files:
            if file.endswith(".txt"):
                file_path = os.path.join(root, file)
                with open(file_path, 'r') as f:
                    content = f.read()
                
                modified_content = content.replace(old_char, new_char)
                
                with open(file_path, 'w') as f:
                    f.write(modified_content)
    
    print("字符替换完成！")

# 调用示例
replace_chars_in_txt_files('/path/to/txt/files', '要替换的字符', '替换后的字符')