tracing function calls

[Stormbringer]

Greetings,

I've been wondering if there is a mechanism similar to trace/untrace
found in lisp, for example call trace(function-name) and whenever this
function is called it will show its parameters to stdout ....

[Fredrik Lundh]

Re: tracing function calls

"Stormbring er" wrote:
[color=blue]
> I've been wondering if there is a mechanism similar to trace/untrace
> found in lisp, for example call trace(function-name) and whenever this
> function is called it will show its parameters to stdout ....[/color]

def trace(func):
def tracer(*args, **kwargs):
print func.__name__, args, kwargs
result = func(*args, **kwargs)
print func.__name__, "return", result
return result
return tracer

def myfunc(a, b, c):
return a + b + c

myfunc = trace(myfunc)

myfunc(1, 2, 3)

(tweak as necessary)

</F>

[Stormbringer]

Re: tracing function calls

Thank you Fredrik !
With a little tweaking for the right indentation it should prove useful
:)

Fredrik Lundh wrote:[color=blue]
> "Stormbring er" wrote:
>[color=green]
> > I've been wondering if there is a mechanism similar to[/color][/color]
trace/untrace[color=blue][color=green]
> > found in lisp, for example call trace(function-name) and whenever[/color][/color]
this[color=blue][color=green]
> > function is called it will show its parameters to stdout ....[/color]
>
> def trace(func):
> def tracer(*args, **kwargs):
> print func.__name__, args, kwargs
> result = func(*args, **kwargs)
> print func.__name__, "return", result
> return result
> return tracer
>
> def myfunc(a, b, c):
> return a + b + c
>
> myfunc = trace(myfunc)
>
> myfunc(1, 2, 3)
>
> (tweak as necessary)
>
> </F>[/color]