字符串转成时间戳

最新推荐文章于 2025-05-29 17:34:13 发布

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最新推荐文章于 2025-05-29 17:34:13 发布

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原文链接：http://www.cnblogs.com/andy9468/p/7992261.html

（一）通用：time包

1、日期字符串 => 时间戳int

import time

# 将时间字符串转为时间戳int
dt = "2016-05-05 20:28:54"
# 转换成时间数组
timeArray = time.strptime(dt, "%Y-%m-%d %H:%M:%S")
# 转换成时间戳
timestamp = time.mktime(timeArray)

print(timeArray)
print("时间戳-timestamp: %s" % timestamp)

2、时间戳 => 日期字符串

（1）精确到秒s

import time

# 将时间戳int转为时间字符串
timestamp = 1462451334
# 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)
print(dt)
print("日期字符-dt: %s" % dt)

（2）精确到毫秒ms　

import time

ct = time.time()
# ct = 1536994867.9991837
print(ct)
print(int(ct))
local_time = time.localtime(ct)
data_head = time.strftime("%Y-%m-%d %H:%M:%S", local_time)
data_secs = (ct - int(ct)) * 1000
dt_ms = "%s.%03d" % (data_head, data_secs)
print(dt_ms)

　　封装好的函数

def timestamp2datems(timestamp):
    '''
    时间戳转为日期字串，精确到ms。单位s
    :param timestamp:时间戳
    :return:日期字串
    '''
    local_time = time.localtime(timestamp)
    data_head = time.strftime("%Y-%m-%d %H:%M:%S", local_time)
    data_secs = (timestamp - int(timestamp)) * 1000
    dt_ms = "%s.%03d" % (data_head, data_secs)
    # print(dt_ms)
    return dt_ms

3、获取当前时间的时间戳

time.time()

（二）其他：datetime包

1. 日期输出格式化 datetime => string

import datetime
now = datetime.datetime.now()
now.strftime('%Y-%m-%d %H:%M:%S')

strftime是datetime类的实例方法（即为实例方法）。

2. 日期输出格式化 string => datetime

import datetime
t_str = '2015-04-07 19:11:21'
d = datetime.datetime.strptime(t_str, '%Y-%m-%d %H:%M:%S')

strptime是datetime类的静态方法。

3.任意格式时间字符串转成时间戳

import datetime
GMT_FORMAT = '%a, %d %b %Y %H:%M:%S GMT'
TIME = 'Thu, 19 Feb 2009 16:00:07 GMT'
timestamp = datetime.datetime.strptime(TIME, GMT_FORMAT)
print(timestamp)

转载于:https://www.cnblogs.com/andy9468/p/7992261.html