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Python logging for Humans

Project Description

Alog

Python logging for Humans. Your goto logging module without panic on context swtich.

Warning: No more logger = logging.getLogger(__name__) in your every file.

>>> import alog
>>> alog.info("Hi.")
2016-12-18 20:44:30 INFO  <stdin> Hi.
>>> def test():
...     alog.info("Test 1")
...     alog.error("Test 2")
...
>>> test()
2016-12-18 20:45:19 INFO  <stdin:2> Test 1
2016-12-18 20:45:19 ERROR <stdin:3> Test 2
>>> alog.set_level("ERROR")
>>> test()
2016-12-18 20:45:41 ERROR <stdin:3> Test 2

If you’re new to logging, see Why should you use logging instead of print.

Installation

pip install alog

Features

  • Instant logging with expected defaults.

    You can do logging instantly by reading a small piece of README. Alog comes with useful defaults:

    • A default logger.

    • Logging level: logging.INFO

    • Logging format:

      "%(asctime)s %(levelname)-5.5s [parent_module.current_module:%(lineno)s]%(message)s",
      "%Y-%m-%d %H:%M:%S"
      
  • No more __name__ whenever you start to do logging in a module.

    Alog builds the default module names on the fly.

  • Compatible with default Python logging module.

    Alog is built upon default Python logging module. You can configure it by the same way of default Python logging module when it’s needed.

Comparing alog with Python default logging module

Comparing alog :

In [1]: import alog

In [2]: alog.info("Hello alog!")
2016-11-23 12:20:34 INFO  <IPython> Hello alog!

with logging module:

In [1]: import logging

In [2]: logging.basicConfig(
   ...:     level=logging.INFO,
   ...:     format="%(asctime)s %(levelname)-5.5s "
   ...:            "[%(name)s:%(lineno)s] %(message)s")

In [3]: # In every file you want to do log, otherwise %(names)s won't work.
In [4]: logger = logging.getLogger(__name__)

In [5]: logger.info("Hello log!")
2016-11-23 12:16:30 INFO  [__main__:1] Hello log!

Why should you use logging instead of print

The main goal of logging is to figure out what was going on and to get the insights. print, by default, does only pure string output. No timestamp, no module hint, and no level control, comparing to a pretty logging record.

Lets start with aproject/models/user.py :

class User:
    def __init__(self, user_id, username):
        ...
        print(username)
        ...

What you got output of print :

>>> admin = User(1, "admin")
"admin"

Now use alog :

import alog

class User:
    def __init__(self, user_id, username):
        ...
        alog.info(username)
        ...

What you got output of alog.info :

>>> admin = User(1, "admin")
2016-11-23 11:32:58 INFO  [models.user:6] admin

In the output of hundreds of lines, it helps (a lot).

What if you have used print a log? That’s as easy:

import alog

print = alog.info

... # A lot of print code no needed to change

(Unrelease)

0.9.13 (2017-06-18)

  • Fix not able to turn_log_datetime(on=False).

0.9.12 (2017-06-16)

  • Support not showing_log_datetime by turn_log_datetime(on=False).

0.9.11 (2017-04-07)

  • Add alog.getLogger() for handy replacing logging.getLogger.

0.9.10 (2017-03-27)

  • Default logging format asctime to “%Y-%m-%d %H:%M:%S” instead of “%Y-%m-%d,%H:%M:%S.%f”.
  • Update package info and usage (setup.py, README, …).

0.9.9 (2016-08-28)

  • Update to turn_thread_name and turn_process_id.

0.9.8 (2016-08-27)

  • Support showing_thread_name and showing_process_id.
  • Support global reset.

0.9.7 (2016-08-17)

  • Better paths log for None default root name.

0.9.6 (2016-08-16)

  • First public release.
Release History

Release History

This version
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0.9.13

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0.9.12

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0.9.11

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0.9.10

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0.9.9

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0.9.8

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0.9.7

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0.9.6

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