I needed to profile a python 3 script of mine. During this process if wanted to use a great helper script but it was not compatible with mine, so i had to port it to python 3.
Porting python 2 code to python 3 is really easy, thanks to
2to3. The last time i ported a library all I had to do was to call
2to3 -w and it worked.
This time it didn't worked as smoothly, but it was very easy to change the last bits. The whole process took no longer than 5 minutes.
The first step was to run
2to3 -w lsprofcalltree.py
After I tried to run the code, I got two
NameError: name 'execfile' is not defined NameError: name 'file' is not defined
The file problem was a really easy fix, all I neede to do was replace it with file
@@ -112,12 +112,12 @@ def main(args): except SystemExit: pass finally: kg = KCacheGrind(prof) - kg.output(file(options.outfile, 'w')) + kg.output(open(options.outfile, 'w')) if __name__ == '__main__':
The second change was a little bit bigger. Since
execfile was inside a string that got evaluatet, 2to3 didn't catch this change. I created an empty new python file with just an execfile statement run 2to3 to see how the new output looked and applied those changes to the new file.
@@ -108,12 +108,12 @@ def main(args): prof = cProfile.Profile() try: try: - prof = prof.run('execfile(%r)' % (sys.argv,)) + prof = prof.run("exec(compile(open(%r).read(), %r, 'exec'))" % (sys.argv,sys.argv)) except SystemExit: pass finally: kg = KCacheGrind(prof)