mirror of
https://github.com/python/cpython.git
synced 2025-08-30 21:48:47 +00:00
b044b2a701
svn+ssh://svn.python.org/python/branches/py3k ................ r74821 | georg.brandl | 2009-09-16 11:42:19 +0200 (Mi, 16 Sep 2009) | 1 line #6885: run python 3 as python3. ................ r74828 | georg.brandl | 2009-09-16 16:23:20 +0200 (Mi, 16 Sep 2009) | 1 line Use true booleans. ................ r74829 | georg.brandl | 2009-09-16 16:24:29 +0200 (Mi, 16 Sep 2009) | 1 line Small PEP8 correction. ................ r74830 | georg.brandl | 2009-09-16 16:36:22 +0200 (Mi, 16 Sep 2009) | 1 line Use true booleans. ................ r74831 | georg.brandl | 2009-09-16 17:54:04 +0200 (Mi, 16 Sep 2009) | 1 line Use true booleans and PEP8 for argdefaults. ................ r74833 | georg.brandl | 2009-09-16 17:58:14 +0200 (Mi, 16 Sep 2009) | 1 line Last round of adapting style of documenting argument default values. ................ r74835 | georg.brandl | 2009-09-16 18:00:31 +0200 (Mi, 16 Sep 2009) | 33 lines Merged revisions 74817-74820,74822-74824 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r74817 | georg.brandl | 2009-09-16 11:05:11 +0200 (Mi, 16 Sep 2009) | 1 line Make deprecation notices as visible as warnings are right now. ........ r74818 | georg.brandl | 2009-09-16 11:23:04 +0200 (Mi, 16 Sep 2009) | 1 line #6880: add reference to classes section in exceptions section, which comes earlier. ........ r74819 | georg.brandl | 2009-09-16 11:24:57 +0200 (Mi, 16 Sep 2009) | 1 line #6876: fix base class constructor invocation in example. ........ r74820 | georg.brandl | 2009-09-16 11:30:48 +0200 (Mi, 16 Sep 2009) | 1 line #6891: comment out dead link to Unicode article. ........ r74822 | georg.brandl | 2009-09-16 12:12:06 +0200 (Mi, 16 Sep 2009) | 1 line #5621: refactor description of how class/instance attributes interact on a.x=a.x+1 or augassign. ........ r74823 | georg.brandl | 2009-09-16 15:06:22 +0200 (Mi, 16 Sep 2009) | 1 line Remove strange trailing commas. ........ r74824 | georg.brandl | 2009-09-16 15:11:06 +0200 (Mi, 16 Sep 2009) | 1 line #6892: fix optparse example involving help option. ........ ................
130 lines
4.3 KiB
ReStructuredText
130 lines
4.3 KiB
ReStructuredText
:mod:`trace` --- Trace or track Python statement execution
|
|
==========================================================
|
|
|
|
.. module:: trace
|
|
:synopsis: Trace or track Python statement execution.
|
|
|
|
|
|
The :mod:`trace` module allows you to trace program execution, generate
|
|
annotated statement coverage listings, print caller/callee relationships and
|
|
list functions executed during a program run. It can be used in another program
|
|
or from the command line.
|
|
|
|
|
|
.. _trace-cli:
|
|
|
|
Command Line Usage
|
|
------------------
|
|
|
|
The :mod:`trace` module can be invoked from the command line. It can be as
|
|
simple as ::
|
|
|
|
python -m trace --count somefile.py ...
|
|
|
|
The above will generate annotated listings of all Python modules imported during
|
|
the execution of :file:`somefile.py`.
|
|
|
|
The following command-line arguments are supported:
|
|
|
|
:option:`--trace`, :option:`-t`
|
|
Display lines as they are executed.
|
|
|
|
:option:`--count`, :option:`-c`
|
|
Produce a set of annotated listing files upon program completion that shows how
|
|
many times each statement was executed.
|
|
|
|
:option:`--report`, :option:`-r`
|
|
Produce an annotated list from an earlier program run that used the
|
|
:option:`--count` and :option:`--file` arguments.
|
|
|
|
:option:`--no-report`, :option:`-R`
|
|
Do not generate annotated listings. This is useful if you intend to make
|
|
several runs with :option:`--count` then produce a single set of annotated
|
|
listings at the end.
|
|
|
|
:option:`--listfuncs`, :option:`-l`
|
|
List the functions executed by running the program.
|
|
|
|
:option:`--trackcalls`, :option:`-T`
|
|
Generate calling relationships exposed by running the program.
|
|
|
|
:option:`--file`, :option:`-f`
|
|
Name a file containing (or to contain) counts.
|
|
|
|
:option:`--coverdir`, :option:`-C`
|
|
Name a directory in which to save annotated listing files.
|
|
|
|
:option:`--missing`, :option:`-m`
|
|
When generating annotated listings, mark lines which were not executed with
|
|
'``>>>>>>``'.
|
|
|
|
:option:`--summary`, :option:`-s`
|
|
When using :option:`--count` or :option:`--report`, write a brief summary to
|
|
stdout for each file processed.
|
|
|
|
:option:`--ignore-module`
|
|
Accepts comma separated list of module names. Ignore each of the named
|
|
module and its submodules (if it is a package). May be given
|
|
multiple times.
|
|
|
|
:option:`--ignore-dir`
|
|
Ignore all modules and packages in the named directory and subdirectories
|
|
(multiple directories can be joined by os.pathsep). May be given multiple
|
|
times.
|
|
|
|
|
|
.. _trace-api:
|
|
|
|
Programming Interface
|
|
---------------------
|
|
|
|
|
|
.. class:: Trace(count=1, trace=1, countfuncs=0, countcallers=0, ignoremods=(), ignoredirs=(), infile=None, outfile=None, timing=False)
|
|
|
|
Create an object to trace execution of a single statement or expression. All
|
|
parameters are optional. *count* enables counting of line numbers. *trace*
|
|
enables line execution tracing. *countfuncs* enables listing of the functions
|
|
called during the run. *countcallers* enables call relationship tracking.
|
|
*ignoremods* is a list of modules or packages to ignore. *ignoredirs* is a list
|
|
of directories whose modules or packages should be ignored. *infile* is the
|
|
file from which to read stored count information. *outfile* is a file in which
|
|
to write updated count information. *timing* enables a timestamp relative
|
|
to when tracing was started to be displayed.
|
|
|
|
|
|
.. method:: Trace.run(cmd)
|
|
|
|
Run *cmd* under control of the Trace object with the current tracing parameters.
|
|
|
|
|
|
.. method:: Trace.runctx(cmd, globals=None, locals=None)
|
|
|
|
Run *cmd* under control of the Trace object with the current tracing parameters
|
|
in the defined global and local environments. If not defined, *globals* and
|
|
*locals* default to empty dictionaries.
|
|
|
|
|
|
.. method:: Trace.runfunc(func, *args, **kwds)
|
|
|
|
Call *func* with the given arguments under control of the :class:`Trace` object
|
|
with the current tracing parameters.
|
|
|
|
This is a simple example showing the use of this module::
|
|
|
|
import sys
|
|
import trace
|
|
|
|
# create a Trace object, telling it what to ignore, and whether to
|
|
# do tracing or line-counting or both.
|
|
tracer = trace.Trace(
|
|
ignoredirs=[sys.prefix, sys.exec_prefix],
|
|
trace=0,
|
|
count=1)
|
|
|
|
# run the new command using the given tracer
|
|
tracer.run('main()')
|
|
|
|
# make a report, placing output in /tmp
|
|
r = tracer.results()
|
|
r.write_results(show_missing=True, coverdir="/tmp")
|
|
|