import time # 引入时间模块

print(time.time()) # 1508146954.9455004： 时间戳

print(time.clock()) # 计算CPU执行时间

print(time.gmtime()) # UTC时间

print(time.localtime()) # 本地时间

print(time.strftime("%Y-%m-%d %H:%M:%S"))

%Y  Year with century as a decimal number.

%m  Month as a decimal number [01,12].

%d  Day of the month as a decimal number [01,31].

%H  Hour (24-hour clock) as a decimal number [00,23].

%M  Minute as a decimal number [00,59].

%S  Second as a decimal number [00,61].

%z  Time zone offset from UTC.

%a  Locale's abbreviated weekday name.

%A  Locale's full weekday name.

%b  Locale's abbreviated month name.

%B  Locale's full month name.

%c  Locale's appropriate date and time representation.

%I  Hour (12-hour clock) as a decimal number [01,12].

%p  Locale's equivalent of either AM or PM.

print(time.strftime("%Y-%m-%d %H:%M:%S%z"))

执行结果：

2017-10-16 18:17:39

fansik = time.strptime('2017-10-16 18:16:26',"%Y-%m-%d %H:%M:%S")

print(fansik)

执行结果：

time.struct_time(tm_year=2017, tm_mon=10, tm_mday=16, tm_hour=18, tm_min=16, tm_sec=26, tm_wday=0, tm_yday=289, tm_isdst=-1)

print(fansik.tm_year)

执行结果：

2017

import datetime

print(datetime.datetime.now())

执行结果：

2017-10-16 18:27:03.256569

import random

print(random.random()) # 0到1的随机数：0.06054267487515341

print(random.randint(1, 9999)) # 1到9999的随机数，包含1和9999

print(random.randrange(1, 9999)) # 1到9999的随机数，不包含9999

print(random.choice('fansik')) # 随机fansik中的一个字符

print(random.choice(['fansik', 'fanjinbao', 'zhangsan'])) # 随机这三个名字

print(random.sample(['fansik', 'zhangsan', 'fanjinbao', 'lisi'], 2)) # 随机选两个名字

随机验证码：

import random

def v_code():

    code = ''

    for i in range(5):

        add = random.choice([random.randrange(10), chr(random.randrange(65, 91))])

        # if i == random.randint(0, 4):

        #     add = random.randrange(10)

        # else:

        #     add = chr(random.randrange(65, 91))

        code += str(add)

    print(code)

v_code()