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

4 votes398 views2 answers
Sum of array using recursion in python
Python
2 votes258 views1 answer
Extract text regex python
Python
3 votes286 views2 answers
Django postgres connection
Python Django
11 votes256 views2 answers
How to find the position in a list python
Python
1 vote258 views1 answer
How to write words on any other apps in python
Python
0 vote247 views1 answer
How to sum a column in csv python using list in python
Python
34 votes249 views6 answers
Name columns pandas
Python
24 votes368 views3 answers
Flask vs django
Python Flask
0 vote238 views1 answer
Python can't find text file
Python
0 vote223 views1 answer
Create a class patient with below attributes in Python
Python