有时候我们会需要大量数据来演示或者测试某些功能，但是可能无法获得这些数据，或者担心泄露信息而不想使用真实数据。这时，我们可以自己生成一些随机数据。

import random

import string

def getEmail():

# of course you can extend the following list

suffix = ['.com', '.org', '.net', '.cn']

characters = string.ascii_letters + string.digits + '_'

username = ''.join((random.choice(characters) for i in range(random.randint(6,12))))

domain = ''.join((random.choice(characters) for i in range(random.randint(3,6))))

return username + '@' + domain + random.choice(suffix)

def getTelNo():

return ''.join((str(random.randint(0,9)) for i in range(11)))

def getNameOrAddress(flag):

'''flag=1 means Name,

flag=0 meains Address'''

#[0x4e00, 0x9fa5] is the range of Chinese character code

start, end = 0x4e00, 0x9fa5

result = ''

#the length of most Chinese people's name is between 2 and 4

if flag==1:

rangestart, rangeend = 2, 5

#here suppose the address contains at most 30 Chinese Characters

elif flag==0:

rangestart, rangeend = 10, 30

else:

print('flag must be 1 or 0')

return

for i in range(rangestart, rangeend):

result += chr(random.randint(start, end))

return result

def getSex():

return random.choice(('男', '女'))

def getAge():

return str(random.randint(18,100))

def main(filename):

with open(filename, 'w', encoding='utf-8') as fp:

fp.write('Name,Sex,Age,TelNO,Address,Email\n')

#quickly generate information of 2000 persons

for i in range(2000):

name = getNameOrAddress(1)

sex = getSex()

age = getAge()

tel = getTelNo()

address = getNameOrAddress(0)

email = getEmail()

line = '{0},{1},{2},{3},{4},{5}\n'.format(name, sex, age, tel, address, email)

fp.write(line)

def output(filename):

with open(filename, 'r', encoding='utf-8') as fp:

for line in fp:

print(line.strip())

if __name__=='__main__':

filename = 'information.txt'

main(filename)

output(filename)

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