Python_异常处理

1.try...except

stream = open('E:/projects/Python/test/filetry.txt','r') #读取

for line in stream:
    try:
        num=int(line.strip())
        if(num==10):
            print('你真乖，拿的苹果数量整好！')
        elif(num>10):
            print('你不听话哦，拿多的请放回去！')
        else:
            print('你拿少了，请拿够你的苹果！')
    except Exception as e:
        print(e)
        continue
stream.close()

执行结果：

你拿少了，请拿够你的苹果！
你真乖，拿的苹果数量整好！
invalid literal for int() with base 10: '15个'
你不听话哦，拿多的请放回去！