How to set timestamps on GMT/UTC on Python logging?
PythonLoggingTimezoneUtcPython Problem Overview
Is it possible and how to set the logging timezone to GMT?
(i.e. the %(asctime)s parameter in the format)
Python Solutions
Solution 1 - Python
logging.Formatter.converter = time.gmtime
(documented in the docstring of logging.Formatter.formatTime)
Solution 2 - Python
Just setting logging.Formatter.converter = time.gmtime is ineffective for me in Python 2.5.
So I created a child class with it set, and use that in place of logging.Formatter:
class UTCFormatter(logging.Formatter):
converter = time.gmtime
Solution 3 - Python
From the python 3 docs:
import time
class UTCFormatter(logging.Formatter):
converter = time.gmtime
Solution 4 - Python
Here is code example:
import logging, logging.handlers
import time
logit = logging.getLogger('logit')
handler = logging.handlers.RotatingFileHandler("file.log", maxBytes=20000, backupCount=5)
handler.setLevel(logging.INFO)
formatter = logging.Formatter('%(asctime)s %(levelname)8s: %(message)s')
handler.setFormatter(formatter)
logging.Formatter.converter = time.gmtime
logit.addHandler(handler)
logit.info("test log message")
Output:
2019-11-14 16:34:22,967 INFO: test log message
Solution 5 - Python
This works:
os.environ['TZ'] = 'UTC'
time.tzset()
But does change the TZ environment for the whole process and any sub-processes. Not necessarily a bad thing, but something to be aware of before doing this.
Alternately if you set the TZ environment variable from outside (whether just in whatever runs the python, or at a whole system level) before you run python, that also works.
Solution 6 - Python
I've had problems with both of these answers. So I just changed global timezone for the whole script:
os.environ['TZ'] = 'Europe/London'
time.tzset()