Countfuncs

Among other things, Trace takes a countfuncs (Boolean) value to turn on listing of the functions as the code is run.

t = TestExec()
trace = Trace(countfuncs=True)
try:
    trace.run('t.run_this_and_that()')
    print "COUNTFUNCS"
except NameError:
    print NameError

<type 'exceptions.NameError'>

COUNTFUNCS

Interestingingly, it seems to have disabled the trace. Not what I was expecting.