python——(time,datetime)

#!/usr/bin/env python
# encoding: utf-8
'''
Module Description

Created on Jul 25, 2019
@author: user
@change: Jul 25, 2019 user: initialization
'''
import time
import datetime
# import pandas as pd

def timestamp_change_to_localtime(timestamp):
    '''

    @param timestamp: 1566443220095(毫秒级时间戳)
    '''
    timeArray = time.localtime(timestamp / 1000)
    local_time = time.strftime("%Y-%m-%d %H:%M", timeArray)

def str_change_to_date(time_str):
    '''
    @param: time_str: '2019-03-17 11:00:00'
    @return:
    '''
    dd = datetime.datetime.strptime(time_str, "%Y-%m-%d %H:%M:%S")
    print(dd, type(dd))

def get_time():
    '''

    :return: '2019-08-28-11-16-03'
    '''
    time.strftime('%Y-%m-%d-%H-%M-%S', time.localtime(time.time()))

def time_subtraction():
    '''

    :return:
    '''
    old_time = datetime.datetime.strptime('2019-08-26', '%Y-%m-%d')
    now_time = datetime.datetime.today()
    interval_days = (now_time - old_time).days

if __name__ == '__main__':
    pass