# portions copyright 2001, Autonomous Zones Industries, Inc., all rights...
# err... reserved and offered to the public under the terms of the
# Author: Zooko O'Whielacronx
# Copyright 2000, Mojam Media, Inc., all rights reserved.
# Copyright 1999, Bioreason, Inc., all rights reserved.
# Copyright 1995-1997, Automatrix, Inc., all rights reserved.
# Copyright 1991-1995, Stichting Mathematisch Centrum, all rights reserved.
# Permission to use, copy, modify, and distribute this Python software and
# its associated documentation for any purpose without fee is hereby
# granted, provided that the above copyright notice appears in all copies,
# and that both that copyright notice and this permission notice appear in
# supporting documentation, and that the name of neither Automatrix,
# Bioreason or Mojam Media be used in advertising or publicity pertaining to
# distribution of the software without specific, written prior permission.
"""program/module to trace Python program or function execution
Sample use, command line:
trace.py -c -f counts --ignore-dir '$prefix' spam.py eggs
trace.py -t --ignore-dir '$prefix' spam.py eggs
trace.py --trackcalls spam.py eggs
Sample use, programmatically
# 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,
# run the new command using the given tracer
# make a report, placing output in /tmp
r.write_results(show_missing=True, coverdir="/tmp")
outfile.write("""Usage: %s [OPTIONS] <file> [ARGS]
--help Display this help then exit.
--version Output version information then exit.
Otherwise, exactly one of the following three options must be given:
-t, --trace Print each line to sys.stdout before it is executed.
-c, --count Count the number of times each line is executed
and write the counts to <module>.cover for each
module executed, in the module's directory.
See also `--coverdir', `--file', `--no-report' below.
-l, --listfuncs Keep track of which functions are executed at least
once and write the results to sys.stdout after the
-T, --trackcalls Keep track of caller/called pairs and write the
results to sys.stdout after the program exits.
-r, --report Generate a report from a counts file; do not execute
any code. `--file' must specify the results file to
read, which must have been created in a previous run
with `--count --file=FILE'.
-f, --file=<file> File to accumulate counts over several runs.
-R, --no-report Do not generate the coverage report files.
Useful if you want to accumulate over several runs.
-C, --coverdir=<dir> Directory where the report files. The coverage
report for <package>.<module> is written to file
<dir>/<package>/<module>.cover.
-m, --missing Annotate executable lines that were not executed
-s, --summary Write a brief summary on stdout for each file.
(Can only be used with --count or --report.)
-g, --timing Prefix each line with the time since the program started.
Filters, may be repeated multiple times:
--ignore-module=<mod> Ignore the given module(s) and its submodules
(if it is a package). Accepts comma separated
--ignore-dir=<dir> Ignore files in the given directory (multiple
directories can be joined by os.pathsep).
PRAGMA_NOCOVER = "#pragma NO COVER"
# Simple rx to find lines with no code.
rx_blank = re.compile(r'^\s*(#.*)?$')
def __init__(self, modules = None, dirs = None):
self._mods = modules or []
self._dirs = map(os.path.normpath, self._dirs)
self._ignore = { '<string>': 1 }
def names(self, filename, modulename):
if modulename in self._ignore:
return self._ignore[modulename]
# haven't seen this one before, so see if the module name is
# on the ignore list. Need to take some care since ignoring
# "cmp" musn't mean ignoring "cmpcache" but ignoring
# "Spam" must also mean ignoring "Spam.Eggs".
if mod == modulename: # Identical names, so ignore
self._ignore[modulename] = 1
# check if the module is a proper submodule of something on
# (will not overflow since if the first n characters are the
# same and the name has not already occurred, then the size
# of "name" is greater than that of "mod")
if mod == modulename[:n] and modulename[n] == '.':
self._ignore[modulename] = 1
# Now check that __file__ isn't in one of the directories
# must be a built-in, so we must ignore
self._ignore[modulename] = 1
# Ignore a file when it contains one of the ignorable paths
# The '+ os.sep' is to ensure that d is a parent directory,
# as compared to cases like:
# filename = "/usr/local.py"
# filename = "/usr/local.py"
if filename.startswith(d + os.sep):
self._ignore[modulename] = 1
# Tried the different ways, so we don't ignore this module
self._ignore[modulename] = 0
"""Return a plausible module name for the patch."""
base = os.path.basename(path)
filename, ext = os.path.splitext(base)
"""Return a plausible module name for the path."""
# If the file 'path' is part of a package, then the filename isn't
# enough to uniquely identify it. Try to do the right thing by
# looking in sys.path for the longest matching prefix. We'll
# assume that the rest is the package name.
comparepath = os.path.normcase(path)
dir = os.path.normcase(dir)
if comparepath.startswith(dir) and comparepath[len(dir)] == os.sep:
if len(dir) > len(longest):
base = path[len(longest) + 1:]
# the drive letter is never part of the module name
drive, base = os.path.splitdrive(base)
base = base.replace(os.sep, ".")
base = base.replace(os.altsep, ".")
filename, ext = os.path.splitext(base)
return filename.lstrip(".")
def __init__(self, counts=None, calledfuncs=None, infile=None,
callers=None, outfile=None):
self.counter = self.counts.copy() # map (filename, lineno) to count
self.calledfuncs = calledfuncs
if self.calledfuncs is None:
self.calledfuncs = self.calledfuncs.copy()
self.callers = self.callers.copy()
# Try to merge existing counts file.
counts, calledfuncs, callers = \
pickle.load(open(self.infile, 'rb'))
self.update(self.__class__(counts, calledfuncs, callers))
except (IOError, EOFError, ValueError), err:
print >> sys.stderr, ("Skipping counts file %r: %s"
"""Merge in the data from another CoverageResults"""
calledfuncs = self.calledfuncs
other_counts = other.counts
other_calledfuncs = other.calledfuncs
other_callers = other.callers
for key in other_counts.keys():
counts[key] = counts.get(key, 0) + other_counts[key]
for key in other_calledfuncs.keys():
for key in other_callers.keys():
def write_results(self, show_missing=True, summary=False, coverdir=None):
print "functions called:"
calls = self.calledfuncs.keys()
for filename, modulename, funcname in calls:
print ("filename: %s, modulename: %s, funcname: %s"
% (filename, modulename, funcname))
print "calling relationships:"
calls = self.callers.keys()
lastfile = lastcfile = ""
for ((pfile, pmod, pfunc), (cfile, cmod, cfunc)) in calls:
print "***", pfile, "***"
if cfile != pfile and lastcfile != cfile:
print " %s.%s -> %s.%s" % (pmod, pfunc, cmod, cfunc)
# turn the counts data ("(filename, lineno) = count") into something
# accessible on a per-file basis
for filename, lineno in self.counts.keys():
lines_hit = per_file[filename] = per_file.get(filename, {})
lines_hit[lineno] = self.counts[(filename, lineno)]
# accumulate summary info, if needed
for filename, count in per_file.iteritems():
# skip some "files" we don't care about...
if filename == "<string>":
if filename.startswith("<doctest "):
if filename.endswith((".pyc", ".pyo")):
dir = os.path.dirname(os.path.abspath(filename))
modulename = modname(filename)
if not os.path.exists(dir):
modulename = fullmodname(filename)
# If desired, get a list of the line numbers which represent
# executable content (returned as a dict for better lookup speed)
lnotab = find_executable_linenos(filename)
source = linecache.getlines(filename)
coverpath = os.path.join(dir, modulename + ".cover")
n_hits, n_lines = self.write_results_file(coverpath, source,
percent = 100 * n_hits // n_lines
sums[modulename] = n_lines, percent, modulename, filename
print "lines cov% module (path)"
n_lines, percent, modulename, filename = sums[m]
print "%5d %3d%% %s (%s)" % sums[m]
# try and store counts and module info into self.outfile
pickle.dump((self.counts, self.calledfuncs, self.callers),
open(self.outfile, 'wb'), 1)
print >> sys.stderr, "Can't save counts files because %s" % err
def write_results_file(self, path, lines, lnotab, lines_hit):
"""Return a coverage results file in path."""
outfile = open(path, "w")
print >> sys.stderr, ("trace: Could not open %r for writing: %s"
"- skipping" % (path, err))
for i, line in enumerate(lines):
# do the blank/comment match to try to mark more lines
# (help the reader find stuff that hasn't been covered)
outfile.write("%5d: " % lines_hit[lineno])
elif rx_blank.match(line):
# lines preceded by no marks weren't hit
# Highlight them if so indicated, unless the line contains
if lineno in lnotab and not PRAGMA_NOCOVER in lines[i]:
outfile.write(lines[i].expandtabs(8))
def find_lines_from_code(code, strs):
"""Return dict where keys are lines in the line number table."""
for _, lineno in dis.findlinestarts(code):
def find_lines(code, strs):
"""Return lineno dict for all code objects reachable from code."""
# get all of the lineno information from the code of this scope level
linenos = find_lines_from_code(code, strs)
# and check the constants for references to other code objects
# find another code object, so recurse into it
linenos.update(find_lines(c, strs))
def find_strings(filename):
"""Return a dict of possible docstring positions.
The dict maps line numbers to strings. There is an entry for
line that contains only a string or a part of a triple-quoted
# If the first token is a string, then it's the module docstring.
# Add this special case so that the test in the loop passes.
prev_ttype = token.INDENT
for ttype, tstr, start, end, line in tokenize.generate_tokens(f.readline):
if ttype == token.STRING:
if prev_ttype == token.INDENT:
for i in range(sline, eline + 1):
def find_executable_linenos(filename):
"""Return dict where keys are line numbers in the line number table."""
prog = open(filename, "rU").read()
print >> sys.stderr, ("Not printing coverage data for %r: %s"
code = compile(prog, filename, "exec")
strs = find_strings(filename)
return find_lines(code, strs)
def __init__(self, count=1, trace=1, countfuncs=0, countcallers=0,
ignoremods=(), ignoredirs=(), infile=None, outfile=None,
@param count true iff it should count number of times each
@param trace true iff it should print out each line that is
@param countfuncs true iff it should just output a list of
(filename, modulename, funcname,) for functions
that were called at least once; This overrides
@param ignoremods a list of the names of modules to ignore
@param ignoredirs a list of the names of directories to ignore
all of the (recursive) contents of
@param infile file from which to read stored counts to be
@param outfile file in which to write the results
@param timing true iff timing information be displayed
self.ignore = Ignore(ignoremods, ignoredirs)
self.counts = {} # keys are (filename, linenumber)
self.blabbed = {} # for debugging
self.pathtobasename = {} # for memoizing os.path.basename
self.start_time = time.time()
self.globaltrace = self.globaltrace_trackcallers
self.globaltrace = self.globaltrace_countfuncs
self.globaltrace = self.globaltrace_lt
self.localtrace = self.localtrace_trace_and_count
self.globaltrace = self.globaltrace_lt
self.localtrace = self.localtrace_trace
self.globaltrace = self.globaltrace_lt
self.localtrace = self.localtrace_count
# Ahem -- do nothing? Okay.
It is recommended that you Edit text format, this type of Fix handles quite a lot in one request
