如何在多个文件中用不同的字符串替换模式

import os

def replace_in_files(file_list, pattern, replacement):
    for file_path in file_list:
        with open(file_path, 'r') as file:
            content = file.read()
        
        # 使用字符串替换函数或正则表达式替换函数进行替换
        new_content = content.replace(pattern, replacement)
        
        with open(file_path, 'w') as file:
            file.write(new_content)

# 替换模式和目标字符串
pattern1 = 'apple'
replacement1 = 'orange'

pattern2 = 'banana'
replacement2 = 'grape'

# 需要替换的文件列表
file_list = ['file1.txt', 'file2.txt', 'file3.txt']

# 替换第一种模式
replace_in_files(file_list, pattern1, replacement1)

# 替换第二种模式
replace_in_files(file_list, pattern2, replacement2)