profilehooks 1.12.0

Decorators for profiling/timing/tracing individual functions

profilehooks

It’s a collection of decorators for profiling functions. E.g. to profile a single function:

from profilehooks import profile

@profile
def my_function(args, etc):
    pass

The results will be printed when the program exits (or you can use @profile(immediate=True)).

If you’re interested in coarse timings and don’t want to pay for the overhead of profiling, use

from profilehooks import timecall

@timecall       # or @timecall(immediate=True)
def my_function(args, etc):
    pass

Finally, you may be interested in seeing line coverage for a single function

from profilehooks import coverage

@coverage
def my_function(args, etc):
    pass

Also functions can be available in Python console or module if run it with -m arg

$ python -m profilehooks
>>> profile
<function profile at 0x1005c6488>

$ python -m profilehooks yourmodule

Full documentation is available through pydoc profilehooks after installation.

The home page for this module is https://mg.pov.lt/profilehooks. It has screensho, uh, that is, more examples.

Changelog

1.12.0 (2020-08-20)

• Added the ability to pass a text-mode file object to the stdout kwarg of the @profile() decorator and FuncProfiler() constructor for capturing output: https://github.com/mgedmin/profilehooks/pull/26.

1.11.2 (2020-03-03)

• Fix breakage with @functools.lru_cache(): https://github.com/mgedmin/profilehooks/issues/25.
• Use @functools.wraps() so decorated functions now correctly set the __wrapped__ attribute.

1.11.1 (2020-01-30)

• Add support for Python 3.8.
• Detect Python source file encoding correctly in @coverage. https://github.com/mgedmin/profilehooks/issues/24.

1.11.0 (2019-04-23)

• New options: @timecall(log_name='logger', log_level=DEBUG). https://github.com/mgedmin/profilehooks/pull/20.
• Add Python 3.7 support.
• Drop Python 3.3 and 3.4 support.

1.10.0 (2017-12-09)

• @timecall() now defaults to the highest-precision timer (timeit.default_timer()) instead of time.time(): https://github.com/mgedmin/profilehooks/pull/11

1.9.0 (2017-01-02)

• Drop claim of Python 3.2 compatibility. Everything still works, except I’m no longer running automated tests on 3.2, so things might regress.
• Drop Python 2.6 compatibility.
• Add Python 3.6 compatibility.

1.8.1 (2015-11-21)

• Include PID in temporary filenames: https://github.com/mgedmin/profilehooks/issues/6.
• Claim Python 3.5 compatibility.

1.8.0 (2015-03-25)

• New option: @profile(stdout=False) to suppress output to sys.stdout.

1.7.1 (2014-12-02)

• Make @profile(profiler='hotshot') work again. This was probably broken in 1.0 or 1.1, but nobody complained.
• Fix missing space in the output of @profile(skip=N).
• Make @coverage_with_hotshot output match @coverage output precisely.
• 100% test coverage.
• Claim Python 3.4 and PyPy compatibility.

1.7 (2013-10-16)

• Explicitly claim Python 3.3 compatibility.
• Fix Python 3.x bug with @coverage (stop using sys.maxint): https://github.com/mgedmin/profilehooks/issues/2.

1.6 (2012-06-05)

• Added Python 3.2 compatibility, dropped Python 2.3, 2.4 and 2.5 compatibility.
• Migrated the source repository to https://github.com/mgedmin/profilehooks
• Added a changelog.

1.5 (2010-08-13)

• New argument to @timecall: timer (defaults to time.time). Example: @timecall(timer=time.clock)
• Better documentation.

1.4 (2009-03-31)

• Added support for cProfile, make it the default profiler when available. Previously profilehooks supported profile and hotshot only.

1.3 (2008-06-10)

• Store profile results (when you pass filename to @profile) in pstats format instead of pickles. Contributed by Florian Schulze.

1.2 (2008-03-07)

• New argument to: @timecall: immediate (defaults to False).
• Added a test suite.

1.1 (2007-11-07)

• First release to PyPI, with a setup.py and everything.
• New arguments to @profile: dirs, sort, entries. Contributed by Hanno Schlichting.
• Preserve function attributes such as __doc__ and __module__ when decorating them.
• Pydoc-friendly docstring wrapping and other docstring improvements.

1.0 (2006-12-06)

• Changed licence from GPL to MIT.
• New decorator: @timecall
• New arguments to @profile: skip, filename, immediate.
• Added support for profile, after becoming convinced hotshot was unreliable. Made it the default profiler.

0.1 (2004-12-30)

• First public release (it didn’t actually have a version number), announced on my blog: https://mg.pov.lt/blog/profiling.html
• @profile and @coverage decorators that didn’t accept any arguments.
• hotshot was the only profiler supported for @profile, while @coverage used trace.py