如何在Python中高效地替换巨型半ascii半二进制文件中的一行

with open("filename", "rb+") as file:
    # 在这里执行替换操作

lines = file.readlines()
target_line_index = 0  # 目标行索引，从0开始计数

new_line = "replacement"  # 替换成的新行

# 使用字符串的replace()方法替换
lines[target_line_index] = lines[target_line_index].replace(lines[target_line_index], new_line)

# 或者使用正则表达式替换
import re
lines[target_line_index] = re.sub("pattern", new_line, lines[target_line_index])

file.seek(0)  # 将文件指针移回文件开头
file.writelines(lines)  # 写入修改后的内容

with open("filename", "rb+") as file:
    lines = file.readlines()
    target_line_index = 0

    new_line = "replacement"

    lines[target_line_index] = lines[target_line_index].replace(lines[target_line_index], new_line)

    file.seek(0)
    file.writelines(lines)