第十章 文件和异常

动手试一试

10-1 python 学习笔记

.txt文件

python 可以修图片
python 可以做游戏
python 可以爬取数据

.py文件 

filename="scratch.txt"
with open(filename,encoding="utf-8")as file_object:
    contents=file_object.read()
    print(contents)
with open(filename,encoding="utf-8")as file_object:
    for line in file_object:
        print(line)
with open(filename,encoding="utf-8")as file_object:
    lines=file_object.readlines()
    for line in lines:
        print(line.rstrip())

注意：如果.txt里面有汉字，记得在open里面添加 encoding="utf-8"，打开文件就可以指定编码类型。

10-3访客

filename="scratch.txt"
name=input("enter your name")
with open(filename,"w")as file_object:
    file_object.write(name)

10-4访客名单

filename="scratch.txt"
while True:
    name=input("enter your name")
    if name=="quit":
        break
    with open(filename,"w")as filename:
        filename.write(name)