Python3 time tzset() Method
Description
The Python time tzset() method reinitializes time-related settings from the environment variable TZ.
Standard TZ environment variable format:
std offset [dst [offset [,start[/time], end[/time]]]]
Parameters
std and dst: Three or more letters representing the time abbreviation. Passed to time.tzname.
offset: The offset from UTC, format: [+|-]hh[:mm[:ss]] {h=0-23, m/s=0-59}.
start[/time], end[/time]: The date when DST starts to take 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 days (February 29) are not counted.
n: Julian day (0 <= n <= 365). Leap days (February 29) are counted.
Mm.n.d: 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.
time: (Optional) The time when DST starts to take effect (24-hour format). The default value is 02:00 (local time of the specified timezone).
Syntax
time.tzset()
Parameters
- NA.
Return Value
This function does not return any value.
Example
The following example demonstrates the usage of the tzset() function:
#!/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