Python function guts

import sys
import threading

def show_guts(f):
    sentinel = object()
    gutsdata = threading.local()
    gutsdata.captured_locals = None
    gutsdata.tracing = False

    def trace_locals(frame, event, arg):
        if event.startswith('c_'):  # C code traces, no new hook
            return 
        if event == 'call':  # start tracing only the first call
            if gutsdata.tracing:
                return None
            gutsdata.tracing = True
            return trace_locals
        if event == 'line':  # continue tracing
            return trace_locals

        # event is either exception or return, capture locals, end tracing
        gutsdata.captured_locals = frame.f_locals.copy()
        return None

    def wrapper(*args, **kw):
        # preserve existing tracer, start our trace
        old_trace = sys.gettrace()
        sys.settrace(trace_locals)

        retval = sentinel
        try:
            retval = f(*args, **kw)
        finally:
            # reinstate existing tracer, report, clean up
            sys.settrace(old_trace)
            for key, val in gutsdata.captured_locals.items():
                print '{}: {!r}'.format(key, val)
            if retval is not sentinel:
                print 'Returned: {!r}'.format(retval)
            gutsdata.captured_locals = None
            gutsdata.tracing = False

        return retval

    return wrapper

Source: stackoverflow.com

Similar codes

3 votes96 views1 answer
Restore index after concatenate
Python
5 votes95 views1 answer
Sphere volume formula
Python
0 vote97 views2 answers
Geckodriver' executable needs to be in path
Python
1 vote95 views1 answer
Python how to create attribute of class while iterating a list
Python
0 vote101 views2 answers
Set cookie in python requests
Python
0 vote103 views1 answer
Jugendwort 2019
Python
0 vote103 views1 answer
Python create sqlite db in memory
Python
1 vote109 views1 answer
How to make a PKCS8 RSA signature in python
Python
7 votes100 views4 answers
How to create 2d list in python
Python
1 vote95 views1 answer
Take multiple string as int in a list python
Python