python time library

1| Directive | Meaning                                                        | Example                 | 
2|-----------|------------------------------------------------------------------------------------------|
3|%a         | Abbreviated weekday name.                                      | Sun, Mon, ..            | 
4|%A         | Full weekday name.                                             | Sunday, Monday, ...     | 
5|%w         | Weekday as a decimal number.                                   | 0, 1, ..., 6            | 
6|%d         | Day of the month as a zero-padded decimal.                     | 01, 02, ..., 31         | 
7|%-d        | Day of the month as a decimal number.                          | 1, 2, ..., 30           | 
8|%b         | Abbreviated month name.                                        | Jan, Feb, ..., Dec      | 
9|%B         | Full month name.                                               | January, February, ...  | 
10|%m         | Month as a zero-padded decimal number.                         | 01, 02, ..., 12         | 
11|%-m        | Month as a decimal number.                                     | 1, 2, ..., 12           | 
12|%y         | Year without century as a zero-padded decimal number.          | 00, 01, ..., 99         | 
13|%-y        | Year without century as a decimal number.                      | 0, 1, ..., 99           | 
14|%Y         | Year with century as a decimal number.                         | 2013, 2019 etc.         | 
15|%H         | Hour (24-hour clock) as a zero-padded decimal number.          | 00, 01, ..., 23         | 
16|%-H        | Hour (24-hour clock) as a decimal number.                      | 0, 1, ..., 23           | 
17|%I         | Hour (12-hour clock) as a zero-padded decimal number.          | 01, 02, ..., 12         | 
18|%-I        | Hour (12-hour clock) as a decimal number.                      | 1, 2, ... 12            | 
19|%p         | Locale’s AM or PM.                                             | AM, PM                  | 
20|%M         | Minute as a zero-padded decimal number.                        | 00, 01, ..., 59         | 
21|%-M        | Minute as a decimal number.                                    | 0, 1, ..., 59           | 
22|%S         | Second as a zero-padded decimal number.                        | 00, 01, ..., 59         | 
23|%-S        | Second as a decimal number.                                    | 0, 1, ..., 59           | 
24|%f         | Microsecond as a decimal number, zero-padded on the left.      | 000000 - 999999         | 
25|%z         | UTC offset in the form +HHMM or -HHMM.                         |                         | 
26|%Z         | Time zone name.                                                |                         | 
27|%j         | Day of the year as a zero-padded decimal number.               | 001, 002, ..., 366      | 
28|%-j        | Day of the year as a decimal number. 1, 2, ..., 366            |                         | 
29|%U         | Week number of the year (Sunday as the first day of the week). | 00, 01, ..., 53         | 
30|%W         | Week number of the year (Monday as the first day of the week). | 00, 01, ..., 53         | 
31|%c         | Locale’s appropriate date and time representation.             | Mon Sep 30 07:06:05 2013|
32|%x         | Locale’s appropriate date representation.                      | 09/30/13                | 
33|%X         | Locale’s appropriate time representation.                      | 07:06:05                | 
34|%%         | A literal '%' character.                                       | %                       | 
35

1# Here is a self updating clock function, just run it and it'll self update itself until you hit CTRL-C
2import datetime
3import time
4def clock():
5    while True:
6        print(datetime.datetime.now().strftime("%H:%M:%S"), end="\r")
7        time.sleep(1)
8
9clock()

1#also see datetime
2import time
3now = time.time()
4print(now)

1>>> from time import perf_counter
2>>> def longrunning_function():
3...     for i in range(1, 11):
4...         time.sleep(i / i ** 2)
5...
6>>> start = perf_counter()
7>>> longrunning_function()
8>>> end = perf_counter()
9>>> execution_time = (end - start)
10>>> execution_time
118.201258441999926
12

1import time
2seconds = time.time()
3print("Seconds since epoch =", seconds)	
4

1>>> strptime('Fri Mar 01 23:38:40 2019')
2time.struct_time(tm_year=2019, tm_mon=3, tm_mday=1, tm_hour=23, tm_min=38, tm_sec=40, tm_wday=4, tm_yday=60, tm_isdst=-1)
3