Have you tried the filter options?
“These options may be repeated multiple times.
--ignore-module=<mod>
Ignore each of the given module names and its submodules (if it is a package).
The argument can be a list of names separated by a comma.
--ignore-dir=<dir>
Ignore all modules and packages in the named directory and subdirectories. The
argument can be a list of directories separated by
os.pathsep<https://docs.python.org/3/library/os.html#os.pathsep>.”
From: Python-list <python-list-bounces+gweatherby=uchc....@python.org> on
behalf of Peter Slížik <peter.sli...@gmail.com>
Date: Wednesday, February 15, 2023 at 12:22 PM
To: python-list@python.org <python-list@python.org>
Subject: Python: How to use the 'trace' module programmatically?
*** Attention: This is an external email. Use caution responding, opening
attachments or clicking on links. ***
Hello,
I'm trying to analyze complex Python code. For some specific reasons, I
decided to use tracing instead of a debugger.
The first thing I tried was:
python -m trace -t /path/to/file.py
The output of this command turned out to be completely useless. The reason
is that there was a thread running in the background, doing some work
every *0.1
s* and this generated thousands of lines of tracing information. The useful
information (a reaction to my interaction with app GUI) scrolled away in a
blink.
For this reason, I decided to limit the scope of tracing. I did the
following.
The original code:
def caller():
print("I'm the caller.")
callee()
def callee():
print("Callee here.")
Code modified for tracing:
import trace
tracer = trace.Tracer(
count=0,
trace=1,
)
def outer():
print("I'm the caller.")
tracer.runfunc(inner)
def inner():
print("Callee here.")
Now I launched the program and the tracer did not generate any output. I
was hoping that this would provide complete tracing information, but only
for the limited scope of inner().
No success with tracer.run() either.
What I was able to do, when I set count=1, I was able to catch the coverage
data with tracer.results() and write them to a file. But the tracing
information was not generated even in this case.
Am I doing anything wrong?
Peter
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