Python與其他時間的當前時間比較

Question

我正在尋找Python中兩次的比較。有一次是從計算機上的實時時間，另一次是存儲在格式爲"01:23:00"的字符串中。

import time 

ctime = time.strptime("%H:%M:%S") # this always takes system time 
time2 = "08:00:00" 

if (ctime > time2): 
    print "foo" 

Answer 1

import datetime 

now = datetime.datetime.now() 

my_time_string = "01:20:33" 
my_datetime = datetime.datetime.strptime(my_time_string, "%H:%M:%S") 

# I am supposing that the date must be the same as now 
my_datetime = now.replace(hour=my_datetime.time().hour, minute=my_datetime.time().minute, second=my_datetime.time().second, microsecond=0) 

if (now > my_datetime): 
    print "Hello" 

編輯：

將上述溶液沒有考慮到閏秒天（23:59:60）。下面是一個更新的版本，此類案件涉及：

import datetime 
import calendar 
import time 

now = datetime.datetime.now() 

my_time_string = "23:59:60" # leap second 
my_time_string = now.strftime("%Y-%m-%d") + " " + my_time_string # I am supposing the date must be the same as now 

my_time = time.strptime(my_time_string, "%Y-%m-%d %H:%M:%S") 

my_datetime = datetime.datetime(1970, 1, 1) + datetime.timedelta(seconds=calendar.timegm(my_time)) 

if (now > my_datetime): 
    print "Foo" 

Answer 2

https://docs.python.org/2/library/datetime.html

的datetime模塊將解析日期，時間，或組合的日期時間值轉換成可以進行比較的對象。

Answer 3

from datetime import datetime 
current_time = datetime.strftime(datetime.utcnow(),"%H:%M:%S") #output: 11:12:12 
mytime = "10:12:34" 
if current_time > mytime: 
    print "Time has passed."