python生成6位数验证码

for i in range(1000000):
    if i<10:
        i = ‘00000’+str(i)
    elif 10<=i and i<100:
        i =’0000’+str(i)
    elif 100<=i and i<1000:
        i =’000’+str(i)
    elif 1000<=i and i<10000:
        i =’00’+str(i)
    elif 10000<=i and i<100000:
        i =’0’+str(i)
    else:
        i=str(i)
    with open(‘6位数字验证码.txt’, ‘a’) as f:
        f.write(i+”\n”)