轉自:https://morvanzhou.github.io/tutorials/python-basic/basic/13-02-try/

原創作者: 莫煩

錯誤處理 

輸出錯誤：try:, except ... as ...: 看如下程式碼

try:
    file=open('eeee.txt','r')  #會報錯的程式碼
except Exception as e:  # 將報錯儲存在 e 中
    print(e)
"""
[Errno 2] No such file or directory: 'eeee.txt'
"""

處理錯誤：會使用到迴圈語句。首先報錯：沒有這樣的檔案No such file or directory

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中會寫入'ssss'