添加捕获异常

Posted 2020-12-31 luonanhenniu

# import traceback
# def calc(a,b):
#     res = a/b
#     return res
#
#
# def main():
#     money=input(‘输入多少钱：‘)
#     months=input(‘还几个月：‘)
#     try:
#         res = calc(int(money),int(months))
#     except ZeroDivisionError as e:#try里面的代码出错 走except
#         traceback.print_exc()
#         print("还款的月数不能为0",e)
#     except ValueError as e:
#         print("输入必须是整数，%s"%e)
#     except Exception as e:
#         print(‘未知错误！‘)
#
#     else:#没有出错走else
#         print(‘每个月还%s‘%res)
#     print(‘hihihi‘)
#
# import pymysql
# def main2():
#     try:
#         conn = pymysql.connect()
#     except Exception as e:
#         print(‘数据库连接不了，%s‘%e)
#     else:
#         cur=conn.cursor()
#         try:
#             cur.execute(sql)
#         except Exception as e:
#             print(‘sql语句有错误！%s。sql是"%s"%(e,sql)‘)
#         else:
#             res = cur.fetchall()
#             return res
#         finally:
#             cur.close()
#             conn.close()

import requests
def req():
    r = requests.get(‘http://118.24.3.40/api/user/all_stu‘,headers={‘Refere‘:‘http://118.24.3.40/‘})
    if len(r.json()[‘stu_info‘])<0:
        pass
    else:
        raise Exception(‘接口无数据‘)#主动剖出异常

req()