在python中保存跟踪函数的结果

Question

I'm trying to find out some logging information using 'trace' function provided by python using the following code.

tracer = trace.Trace(
ignoredirs=[sys.prefix, sys.exec_prefix],
trace=False,
countfuncs = True,
count=False,
timing = True)
tracer.run('exec(script, variables, variables)')

# make a report, placing output in the current directory
r = tracer.results()
r.write_results(show_missing=True,coverdir='trace_vizier')

The trace results are getting printed in the terminal but the file where data is saved is not generated.

Could someone tell me why this is happening?

Note - https://docs.python.org/3/library/trace.html (Trace function)

Answer 1

It appears that It has something to do with putting in-builts functions as command for the run method from Trace, and with the arguments countfuncs and count that the Trace constructor receives. Here is what I did:

From the arguments the Trace constructor receives change countfuncs and count to countfuncs = False, count=True . Next put exec(script, variables, variables)' inside a function of your own and pass it into the run method.

An example:

def test(x):
    exec(x)

tracer = trace.Trace(
ignoredirs=[sys.prefix, sys.exec_prefix],
trace=False,
countfuncs = False,
count=True,
timing = True)
x = 'print("asdf")'
tracer.run('test(x)')

# make a report, placing output in the current directory
r = tracer.results()
r.write_results(show_missing=True,coverdir='trace_vizier')