python异常处理与断言以及日志模块

#python 异常处理
try:
    print("try:")
    s=input("input:")
    b=int(s)
    c=int(input("input2:"))
    s2=b/c
    id=int(input("id:"))
    print([1,2,3][id])
except ValueError as e1:
    print("ValueError:")    
    print(e1)
except ZeroDivisionError as e2:
    print("ZeroDivisionError:") 
    print(e2)
except Exception as e:
    print(e)
finally:    #不管有没有异常,finally里面的语句都执行
    print("finally")
print("自己定义错误提示".center(20,"*"))
try:
    print("try:")
    s=input("input:")
    b=int(s)
    c=int(input("input2:"))
    s2=b/c
    id=int(input("id:"))
    print([1,2,3][id])
except ValueError:
    print("ValueError:")
    print("输入的值不能转换成整数:")
except ZeroDivisionError:
    print("ZeroDivisionError:")
    print("被除数不能为0")
except Exception as e:
    print(e)
finally:
    print("finally")

#断言assert
print("断言assert:")
try:
    print("try:")
    a=input("input:")
    assert a.isdigit(),"输入的a不合法!"
    b=int(a)
    assert b!=0,"除数不为0!"
    r=10/b
    print("result:",r)
    id=int(input("id:"))
    l=[1,2,3]
    assert id in range(len(l)),"索引超出范围!"
    print(l[id])
except AssertionError as e:
    print(e)
finally:　　#不管有没有异常,finally里面的语句都执行
    print("finally")

#日志模块logging
import logging
logging.basicConfig(
    #日志级别
    level=logging.DEBUG,
    #日志格式
    #时间、代码、行号、日志级别、日志信息
    format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',
    #日志时间格式
    #datefmt='%a, %d %b %Y %H:%M:%S',
    #日志存放目录
    filename='logfile.log',
    #打开日志文件的方式
    filemode="a"
   )
logging.debug("这是一个调试信息")
logging.info("这是一个通知信息")
logging.warning("这是一个警告信息") 
logging.error("这是一个错误信息")
logging.critical("这是一个严重错误信息") 

import requests
import logging
from prettytable import PrettyTable
logging.basicConfig(
    #日志级别
    level=logging.DEBUG,
    #日志格式
    format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',
    #日志存放目录
    filename='logfile.log',
    #打开日志文件的方式
    filemode="a"
    ) 
url="https://kyfw.12306.cn/otn/resources/js/framework/station_name.js?station_version=1.9090"
try:
    txt=requests.get(url).text
except:
    print("网络未连接!")
#print(txt)
inf=txt[:-2].split("@")[1:]
#print(inf)
stations={}
for record in inf:
    rlist=record.split("|")
    stations[rlist[2]]={"cn":rlist[1],"qp":rlist[3],"jp":rlist[4]}  #把车站编码当作key
def getcode(t):
    while True:
        s1=input("%s站:"%t)
        r1=[]
        for id,station in stations.items():
            if s1 in station.values():
                r1.append((id,station))
        if r1:
            break
        print("没有这个车站!")
        print("请重新输入!")
    if len(r1)==1:
        sid=r1[0][0]
    else:
        print("你输入的条件比较模糊,请在以下站中进行选择:")
        for i in range(len(r1)):
            print(i+1,r1[i][1]["cn"])
        sel=int(input("你的选择:"))-1
        sid=r1[sel][0]
    return sid
fromid=getcode("出发")
toid=getcode("到达")
fdate=input("出发日期(格式:2019-01-01):").strip()
qurl=("https://kyfw.12306.cn/otn/leftTicket/queryZ?leftTicketDTO.train_date=%s&leftTicketDTO.from_station=%s&leftTicketDTO.to_station=%s&purpose_codes=ADULT")%(fdate,fromid,toid)
print(qurl)
print("你输入的查询条件是:出发站:{},到达站:{}".format(fromid,toid)) 
ainf=requests.get(qurl).json()["data"]["result"] #json文件存储当前从出发站到目的站的所有车次的详细信息
result=[]
gaotie=[]
huoche=[]
for i in ainf:
    list=i.split("|")
    checi=list[3]
    chufa=stations[list[6]]["cn"]
    mudi=stations[list[7]]["cn"]
    ftime=list[8]
    dtime=list[9]
    sw=list[32]
    yd=list[31]
    rw=list[23]
    yw=list[26]
    wuzuo=list[28]
    ed=list[30]
    yz=list[29]
    result.append((checi,chufa,mudi,ftime,dtime,ed,yz,wuzuo,yw,rw,yd,sw))
    if checi[0] in ["G","D"]:
        gaotie.append([checi,chufa,mudi,ftime,dtime,sw,yd,ed])
    else:
        huoche.append([checi,chufa,mudi,ftime,dtime,yz,yw,rw,wuzuo])
#print(result)

while True:
    print("请输入查看信息:1、全部    2、高铁、动车     3、火车 4、退出")
    show=int(input("请选择:"))
    if show==1:
        table=PrettyTable(["车次","出发站","目的站","发车时间","到达时间","商务座","一等座","二等座","硬座","硬卧","软卧","无座"])
        for i in result:
            table.add_row([i[0],i[1],i[2],i[3],i[4],i[5],i[6],i[7],i[8],i[9],i[10],i[11]])
        print(table)
    elif show==2:
        table=PrettyTable(["车次","出发站","目的站","发车时间","到达时间","商务座","一等座","二等座"])
        for i in gaotie:
            table.add_row([i[0],i[1],i[2],i[3],i[4],i[5],i[6],i[7]])
        print(table)
    elif show==3:
        table=PrettyTable(["车次","出发站","目的站","发车时间","到达时间","硬座","硬卧","软卧","无座"])
        for i in huoche:
            table.add_row([i[0],i[1],i[2],i[3],i[4],i[5],i[6],i[7],i[8]])
        print(table)
    elif show==4:
        print("查询结束!")
        break
    else:
        print("输入错误请重新输入!")