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[Question] Changing variable from command line

See original GitHub issue

1. Briefly

I don’t understand, how I can change one variable from command line.

2. Settings

1. Environment

Windows 10 64-bit Enterprise EN,
Python 3.6.3,
Clize 4.0.2.

2. File

For example, I have a file, where I use Logbook logging.

import logbook
import sys

logbook.StreamHandler(sys.stdout,
                        level=logbook.WARNING).push_application()
log = logbook.Logger("Sasha Logbook")

log.debug("Debug message")
log.warning("Warning message")
log.error("Error message")

If I run this file in console, I get output:

D:\SashaPythonista>python SashaLogbook.py
[2018-01-01 17:55:47.063625] WARNING: Sasha Logbook: Warning message
[2018-01-01 17:55:47.064624] ERROR: Sasha Logbook: Error message

Output, if logbook.StreamHandler(sys.stdout, level=logbook.DEBUG).push_application():

[2018-01-01 17:55:46.994054] DEBUG: Sasha Logbook: Debug message
[2018-01-01 17:57:26.982679] WARNING: Sasha Logbook: Warning message
[2018-01-01 17:57:26.983677] ERROR: Sasha Logbook: Error message

And so on.

2. Expected behavior

If:

D:\SashaPythonista>python SashaLogbook.py level=DEBUG
[2018-01-01 17:55:46.994054] DEBUG: Sasha Logbook: Debug message
[2018-01-01 17:55:47.063625] WARNING: Sasha Logbook: Warning message
[2018-01-01 17:55:47.064624] ERROR: Sasha Logbook: Error message

If:

D:\SashaPythonista>python SashaLogbook.py level=WARNING
[2018-01-01 17:57:26.982679] WARNING: Sasha Logbook: Warning message
[2018-01-01 17:57:26.983677] ERROR: Sasha Logbook: Error message

And so on.

3. Actual behavior

I try to add Clize:

import logbook
import sys

from clize import run

log = logbook.Logger("Sasha Logbook")


def test(level="WARNING"):

    if level == "DEBUG":
        logbook.StreamHandler(sys.stdout,
                              level=logbook.DEBUG).push_application()
    if level == "WARNING":
        logbook.StreamHandler(sys.stdout,
                              level=logbook.WARNING).push_application()
    if level == "ERROR":
        logbook.StreamHandler(sys.stdout,
                              level=logbook.ERROR).push_application()


run(test)

log.debug("Debug message")
log.warning("Warning message")
log.error("Error message")

If I replace run(test) to test(), Logbook messages print to console. But if I use run(test), I haven’t output in console.

D:\SashaPythonista>python SashaLogbook.py --help
Usage: SashaLogbook.py [level]

Arguments:
  level         (default: WARNING)

Other actions:
  -h, --help   Show the help

D:\SashaPythonista>python SashaLogbook.py level=DEBUG

D:\SashaPythonista>python SashaLogbook.py level=ERROR

4. Did not help

I see example for logging, but it hard for me. I want only control logging levels from command line.

5. Do not offer

I want to use Logbook, not default Python logging module.

Thanks.

Issue Analytics

State:
Created 6 years ago
Comments:8 (2 by maintainers)

Top GitHub Comments

1reaction

Kristinitacommented, Jan 6, 2018

@epsy , thank you!

Working example:

import logbook
import sys

log = logbook.Logger("Sasha Logbook")


def clize_log_level(*, logbook_level: 'll'="WARNING"):
    """Change log levels via command line.

    User select, which logging messages to see. See about 6 log levels here:
    https://logbook.readthedocs.io/en/stable/quickstart.html

    :param logbook_level: user select logging level
    """

     if logbook_level == "DEBUG":
         logbook.StreamHandler(sys.stdout,
                               level=logbook.DEBUG).push_application()
     if logbook_level == "WARNING":
         logbook.StreamHandler(sys.stdout,
                               level=logbook.WARNING).push_application()
     if logbook_level == "ERROR":
            logbook.StreamHandler(sys.stdout,
                                  level=logbook.ERROR).push_application()

run(clize_log_level, exit=False)

log.debug("Debug message")
log.warning("Warning message")
log.error("Error message")

1reaction

epsycommented, Jan 2, 2018

Ah, I just spotted another problem:

In your 3. example, you use run(test) and then print the log messages. By default, run() exits the program with an appropriate exit code. You have to either move the log.X("...") calls into def test, or you can tell Clize not to exit: run(test, exit=False)