Modern Python Standard Library Cookbook

How to do it...

You need to perform the following steps for this recipe:

1. We can implement a function that traces the execution of a provided function and returns the modules that were executed and the lines for each module:

import trace
import collections

def report_tracing(func, *args, **kwargs):
    outputs = collections.defaultdict(list)

    tracing = trace.Trace(trace=False)
    tracing.runfunc(func, *args, **kwargs)

    traced = collections.defaultdict(set)
    for filename, line in tracing.results().counts:
        traced[filename].add(line)

    for filename, tracedlines in traced.items():
        with open(filename) as f:
            for idx, fileline in enumerate(f, start=1):
                outputs[filename].append(                  (idx, idx in tracedlines, fileline))
                )  
    return outputs

2. Then, once we have the tracing, ...