需要打开一个文件并替换多个字符串

# 打开文件并替换多个字符串
def replace_strings_in_file(file_path, replacements):
    try:
        # 打开文件
        with open(file_path, 'r') as file:
            # 读取文件内容
            content = file.read()

        # 替换字符串
        for old_str, new_str in replacements.items():
            content = content.replace(old_str, new_str)

        # 将替换后的内容写回文件
        with open(file_path, 'w') as file:
            file.write(content)

        print("字符串替换成功！")
    except FileNotFoundError:
        print("文件不存在！")
    except Exception as e:
        print("发生错误：", str(e))

# 替换的字符串及其对应的新字符串
replacements = {
    'old_string1': 'new_string1',
    'old_string2': 'new_string2',
    'old_string3': 'new_string3'
}

# 调用函数进行字符串替换
replace_strings_in_file('path/to/file.txt', replacements)