代码如下：

import random

import datetime

import time

dataCount = 10*100*100    #10M.

codeRange = range(ord('a'),ord('z'))

alphaRange = [chr(x) for x in codeRange]

alphaMax = len(alphaRange)

daysMax = 42003

theDay = datetime.date(1900,1,1)

def genRandomName(nameLength):

    global alphaRange,alphaMax

    length = random.randint(1, nameLength)

    name = ''

    for i in range(length):

        name += alphaRange[random.randint(0,alphaMax-1)]

    return name

def genRandomDay():

    global daysMax,theDay

    mDays = random.randint(0,daysMax)

    mDate = theDay + datetime.timedelta(days=mDays)

    return mDate.isoformat()

def genRandomSex():

    return random.randint(0,1)

def genDataBase1(fileName,dataCount):

    outp = open(fileName,'w')

    i = 0

    while i<dataCount:

        firstName = genRandomName(14)

        lastName = genRandomName(14)

        birthday = genRandomDay()

        sex = genRandomSex()

        mLine = "%i %s %s %s %d\n"%(i+1,firstName,lastName,birthday,sex)

        outp.write(mLine)

        i += 1

    outp.close()

if __name__ == "__main__":

    random.seed()

    start = time.time()

    genDataBase1('db_test.txt',dataCount)

    end = time.time()

    print('use time:%d'%(end-start))

    print('Ok')