tasklogger

An extension to the core python logging library for logging the beginning and completion of tasks and subtasks.

Installation

tasklogger is available on pip. Install by running the following in a terminal:

pip install --user tasklogger

Alternatively, tasklogger can be installed using Conda (most easily obtained via the Miniconda Python distribution):

conda install -c conda-forge tasklogger

Usage examples

Receive timed updates mid-computation using tasklogger.log_start and tasklogger.log_complete:

>>> import tasklogger
>>> import time
>>> tasklogger.start_task("Supertask")
Calculating Supertask...
>>> time.sleep(1)
>>> tasklogger.start_task("Subtask")
  Calculating Subtask...
>>> time.sleep(1)
>>> tasklogger.complete_task("Subtask")
  Calculated Subtask in 1.01 seconds.
>>> time.sleep(1)
>>> tasklogger.complete_task("Supertask")
Calculated Supertask in 3.02 seconds.

Simplify logging syntax with tasklogger.log_task:

>>> import tasklogger
>>> import time
>>> with tasklogger.log_task("Supertask"):
...     time.sleep(1)
...     with tasklogger.log_task("Subtask"):
...        time.sleep(1)
...     time.sleep(1)
Calculating Supertask...
  Calculating Subtask...
  Calculated Subtask in 1.01 seconds.
Calculated Supertask in 3.02 seconds.

Log wall time, CPU time, or any other counter function with the class API:

>>> import tasklogger
>>> import time
>>> logger = tasklogger.TaskLogger(name='cpu_logger', timer='cpu', min_runtime=0)
>>> with logger.log_task("Supertask"):
...     time.sleep(1)
...     with logger.log_task("Subtask"):
...        _ = [[(i,j) for j in range(i)] for i in range(1000)]
...     time.sleep(1)
Calculating Supertask...
  Calculating Subtask...
  Calculated Subtask in 0.09 seconds.
Calculated Supertask in 0.09 seconds.
>>> logger = tasklogger.TaskLogger(name='nano_logger', timer=time.monotonic_ns)
>>> with logger.log_task("Supertask"):
...     time.sleep(1)
...     with logger.log_task("Subtask"):
...        time.sleep(1)
...     time.sleep(1)
Calculating Supertask...
  Calculating Subtask...
  Calculated Subtask in 1001083511.00 seconds.
Calculated Supertask in 3003702161.00 seconds.

Use tasklogger for all your logging needs:

>>> tasklogger.log_info("Log some stuff that doesn't need timing")
Log some stuff that doesn't need timing
>>> tasklogger.log_debug("Log some stuff that normally isn't needed")
>>> tasklogger.set_level(2)
Set TaskLogger logging to DEBUG
>>> tasklogger.log_debug("Log some stuff that normally isn't needed")
Log some stuff that normally isn't needed