在variab中搜索不同的字符串长度

Question

对于变量phoneNumber，它要求完整的电话号码；类似于：029123456。不过，我只需要第一个区号。但是也可以有这样的区号：01845123456，带有不同数量的字符作为区号。我怎样才能把区号存储在变量中呢？你知道吗

下面是full CSV file的一个小示例：

PhoneCode,Area,Example,Latitude,Longitude
113,Leeds,(0113) xxx xxxx,53.801279,-1.548567
114,Sheffield,(0114) xxx xxxx,53.381129,-1.470085
115,Nottingham,(0115) xxx xxxx,52.95477,-1.158086
116,Leicester,(0116) xxx xxxx,52.636878,-1.139759
117,Bristol,(0117) xxx xxxx,51.454513,-2.58791
118,Reading,(0118) xxx xxxx,51.452884,-0.973906
1200,Clitheroe,(01200) xxxxxx,53.871098,-2.393083
1202,Bournemouth,(01202) xxxxxx,50.719164,-1.880769
1204,Bolton,(01204) xxxxxx,53.584441,-2.428619

以下是我目前掌握的代码：

phoneNumber = input("Enter your phone number (UK landline only):")

file = open("phonecodes.csv","r")

#Complete the code here
for line in file:
  data = line.split(",")
  areaCode = data[0]
  if phoneNumber == "0" + areaCode:
    print data[1]

file.close()

Answer 1

或者让用户先输入区号，然后分别输入号码，或者让他们先输入区号，然后输入空格，然后输入号码并拆分：

单独：

area = raw_input("Enter your area code: ")
num = raw_input("Enter you phone number: ")


import csv

r = csv.reader(open("phonecodes.csv"))
for ph_cde, ar_cde, ex, lat, lon in r:
    if "0" + ph_cde ==  area:
       ........

拆分：

area, num = raw_input("Enter your phone number (UK landline only) in format 

AREA NUM:").split()


import csv

r = csv.reader(open("phonecodes.csv"))
for ph_cde, ar_cde, ex, lat, lon in r:
   if "0" + ph_cde ==  area:
        .........

您的数据以逗号分隔，因此csv模块将为您拆分为列。我还使用了原始输入，因为print语句表明您使用的是python2而不是python3。你知道吗