Python3 time tzset() Method

Description

The Python time tzset() re-initializes time-related settings based on the environment variable TZ.

Standard TZ environment variable format:

std offset [dst [offset [,start[/time], end[/time]]]]

Parameters

  • std and dst:Three or more time abbreviation letters. Passed to time.tzname.
  • offset:Offset from UTC, format: [+|-]hh[:mm[:ss]] {h=0-23, m/s=0-59}.
  • start[/time], end[/time]:The date when DST takes effect. The format is m.w.d — representing the month, week number, and day of the date. w=1 refers to the first week of the month, and w=5 refers to the last week of the month. 'start' and 'end' can be one of the following formats:
    • Jn:Julian day n (1 <= n <= 365). Leap year day (February 29) is not counted.
    • n:Julian day (0 <= n <= 365). Leap year day (February 29) is counted.
    • Mm.n.d:The month, week, and day of the date. w=1 refers to the first week of the month, and w=5 refers to the last week of the month.
    • time:(Optional) The time (24-hour clock) when DST takes effect. The default value is 02:00 (local time of the specified time zone).

Syntax

time.tzset()

Parameters

  • NA。

Return Value

This function has no return value.

Examples

The following example demonstrates how to use the tzset() function:

Example

#!/usr/bin/python3 import time import os os.environ['TZ'] = 'EST+05EDT,M4.1.0,M10.5.0' time.tzset() print (time.strftime('%X %x %Z')) os.environ['TZ'] = 'AEST-10AEDT-11,M10.5.0,M3.5.0' time.tzset() print (time.strftime('%X %x %Z'))

The output of the above example is:

23:25:45 04/06/16 EDT
13:25:45 04/07/16 AEST
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