How to set logging file / directory in Abseil Python?
Question:
I have a Python script using https://abseil.io/docs/python/guides/logging.
Documentation does not specify how to set output file like in PEP 282.
I thought that Abseil Logging is built on top of the standard Python logging and I could just set the logging.basicConfig(filename='myapp.log', level=logging.INFO)
But I get:
AttributeError: module ‘absl.logging’ has no attribute ‘basicConfig’
Answers:
For PEP-282 formatted output, use:
logging.basicConfig(filename='myapp.log', level=logging.INFO)
You can set it via the command line:
python --log_dir=/path/to/my/logs
See the (limited) flag documentation by running --helpfull and looking at the absl.logging module.
You can also change it in code (somewhat convolutedly) by calling:
from absl import logging
# ...
logging.get_absl_handler().python_handler.use_absl_log_file(log_dir='/whatever')
print('Logging to: %s' % logging.get_log_file_name())
This will print something like /whatever/py_<myprog>.<hostname>.log.INFO.<ts>. Note that this also creates a friendlier symlink for your latest run that’s just /whatever/py_<myprog>.INFO.
I have a Python script using https://abseil.io/docs/python/guides/logging.
Documentation does not specify how to set output file like in PEP 282.
I thought that Abseil Logging is built on top of the standard Python logging and I could just set the logging.basicConfig(filename='myapp.log', level=logging.INFO)
But I get:
AttributeError: module ‘absl.logging’ has no attribute ‘basicConfig’
For PEP-282 formatted output, use:
logging.basicConfig(filename='myapp.log', level=logging.INFO)
You can set it via the command line:
python --log_dir=/path/to/my/logs
See the (limited) flag documentation by running --helpfull and looking at the absl.logging module.
You can also change it in code (somewhat convolutedly) by calling:
from absl import logging
# ...
logging.get_absl_handler().python_handler.use_absl_log_file(log_dir='/whatever')
print('Logging to: %s' % logging.get_log_file_name())
This will print something like /whatever/py_<myprog>.<hostname>.log.INFO.<ts>. Note that this also creates a friendlier symlink for your latest run that’s just /whatever/py_<myprog>.INFO.