Python3 日期与时间戳相互转换

import time

"""
日期转时间戳
"""


def unix_time(dt):
    # 转换成时间数组
    timeArray = time.strptime(dt, "%Y-%m-%d %H:%M:%S")
    # 转换成时间戳
    timestamp = int(time.mktime(timeArray))
    return timestamp


"""
时间戳转日期
"""


def custom_time(timestamp):
    # 转换成localtime
    time_local = time.localtime(timestamp)
    # 转换成新的时间格式(2016-05-05 20:28:54)
    dt = time.strftime("%Y-%m-%d %H:%M:%S", time_local)
    return dt


time_now = '2019-02-28 10:23:29'
unix_t = unix_time(time_now)
custom_t = custom_time(unix_t)
print(unix_t)  # 1551320609
print(custom_t)  # 2019-02-28 10:23:29

# 如果是自定义的时间格式转换呢，思路方法雷同，比如下：
"""
时间用指定格式显示,比如 年-月-日 转 年/月/日
"""
dt = "2020-10-10 22:20:20"
# 转为数组
timeArray = time.strptime(dt, "%Y-%m-%d %H:%M:%S")
# 转为其它显示格式
customTime = time.strftime("%Y/%m/%d %H:%M:%S", timeArray)
print(customTime)  # 2020/10/10 22:20:20

"""
时间用指定格式显示,比如 年/月/日 转 年-月-日
"""
dt = "2020/10/10 22:20:20"
timeArray = time.strptime(dt, "%Y/%m/%d %H:%M:%S")
customTime = time.strftime("%Y-%m-%d %H:%M:%S", timeArray)
print(customTime)  # 2020-10-10 22:20:20