18 python 初学（time、random 模块）

# _author: lily
# _date: 2019/1/13

import time
import datetime

print(help(time))

# print(time.time())   # 1547376144.4092453 时间戳
# time.sleep(3)
# print(time.clock())
# print(time.gmtime())  # 结构化时间 time.struct_time(tm_year=2019, tm_mon=1, tm_mday=13, tm_hour=10, tm_min=48, tm_sec=29, tm_wday=6, tm_yday=13, tm_isdst=0)
print(time.localtime())  # 结构化时间  time.struct_time(tm_year=2019, tm_mon=1, tm_mday=13, tm_hour=18, tm_min=53, tm_sec=1, tm_wday=6, tm_yday=13, tm_isdst=0)
print(time.strftime('%Y--%m--%d  %H:%M:%S', time.localtime()))   # 一定要记下来
print(time.strptime('2019--01--13  18:57:23', '%Y--%m--%d  %H:%M:%S'))  #把时间再转回一个结构化的时间

print(time.ctime())  # 把时间转换成字符串格式  Sun Jan 13 19:03:51 2019

print(time.mktime(time.localtime()))  # 转换成时间戳  1547377565.0

print(datetime.datetime.now())   # 2019-01-13 19:07:22.823218

random 模块：

# _author: lily
# _date: 2019/1/13

import random

# print(random.random())    # 设定 0 - 1 之间的随机数
# print(random.randint(1, 8))  # 包括8
# print(random.choice([123, 'lily', 'su']))  # 随机取一个元素
# print(random.sample([123, 'lily', 'su'], 2))  # 随机选取两个元素
# print(random.randrange(1, 10))  # 不包括10


def v_code():
    code = ''
    for i in range(5):
        add = random.choice([random.randrange(10), chr(random.randrange(65, 91))])
        code += str(add)

    print(code)


v_code()

print(chr(90))