try语句的使用 笔记

ainizhongguoa

try:
    f=open('why am i a document')
    print(f.read())
    f.close()
except OSError as reason:
    print('something wrong happened \n reason is'+ str(reason))

except语句：先加错误类型，然后加 as 加一个参数
然后打印该参数，参数的内容是错误类型。