Python 基础
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try 错误处理
作者: Huanyu Mao 编辑: 莫烦 2016-11-03
错误处理
输出错误：try:, except ... as ...: 看如下代码
try:
file=open('eeee.txt','r') #会报错的代码
except Exception as e: # 将报错存储在 e 中
print(e)
"""
[Errno 2] No such file or directory: 'eeee.txt'
"""
处理错误：会使用到循环语句。首先报错：没有这样的文件No such file or directory. 然后决定是否输入y, 输入y以后，系统就会新建一个文件（要用写入的类型），再次运行后，文件中就会写入ssss
try:
file=open('eeee.txt','r+')
except Exception as e:
print(e)
response = input('do you want to create a new file:')
if response=='y':
file=open('eeee.txt','w')
else:
pass
else:
file.write('ssss')
file.close()
"""
[Errno 2] No such file or directory: 'eeee.txt'
do you want to create a new file:y
ssss #eeee.txt中会写入'ssss'
莫烦Python
