在CSV文件中添加联系人的python方法

import sys
import os
import time
import csv

def addPerson(filename):
    '''Add a new Person\'s Tel'''
    person = raw_input('Enter the person\'s name: ')
    tel = raw_input('Enter the person\'s tel: ')
    update=time.strftime('%Y-%m-%d %H:%m:%S')

    f=csv.writer(file(filename, 'a'))
    f.writerow([person,tel,update])
    #f.close()

    print 'New Person\'s tel has been added!'

if (os.path.isfile('TelBook.csv'))==False:
        title=['NAME','TEL','TIME']
        f=csv.writer(file('TelBook.csv','w'))
        f.writerow(title)
        #f.close()

input=raw_input('Do you wanna Enter a new Person\' tel?(y/n)')

if input=='y':
    flag=True

else:
    flag=False
    print 'Thanks, Bye!'

while flag:     
    addPerson('TelBook.csv')
    t=raw_input('Do you wanna Enter another?(y/n)')
    if t!='y':
        print 'Thanks, Bye!'
        break
#www.iplaypy.com
import sys
import os
import time
import csv

def addPerson(filename):
    '''Add a new Person\'s Tel'''
    person = raw_input('Enter the person\'s name: ')
    tel = raw_input('Enter the person\'s tel: ')
    update=time.strftime('%Y-%m-%d %H:%m:%S')

    f=csv.writer(file(filename, 'ab'))
    record=[person,tel,update]
    f.writerow(record)
    #f.close()

    print 'New Person\'s tel has been added!'

if (os.path.isfile(r'D:\Exercise\Python\TelBook\TelBook.csv'))==False:
        title=['NAME','TEL','TIME']
        #f=csv.writer(file(r'D:\Exercise\Python\TelBook\TelBook.csv','w'))
        f=csv.writer(file(r'D:\Exercise\Python\TelBook\TelBook.csv','wb'))
        f.writerow(title)
        file(r'D:\Exercise\Python\TelBook\TelBook.csv').close()


input=raw_input('Do you wanna Enter a new Person\' tel?(y/n)')
if input=='y':
    flag=True
else:
    flag=False
    print 'Thanks, Bye!'
while flag:     
    addPerson(r'D:\Exercise\Python\TelBook\TelBook.csv')
    t=raw_input('Do you wanna Enter another?(y/n)')
    if t!='y':
        print 'Thanks, Bye!'
        break
    file(r'D:\Exercise\Python\TelBook\TelBook.csv').close()