Is this horrible python code?

[Matthew]

Hi,

I am working on a small project as well as trying to learn python. I parse a
text file like

def some_user_func( ):
# <name> Some user function
#<description> The description
pass

so that 'name', 'description' get put into self.info and the code gets
compilied into a runnable function in self.func. This works but is it
pythonic?
Thanks alot for helping out! matthew.

def print_message() :
print "I am a message"

def print_num(num=0 ):
print 'Number: ', num

class call_me(object) :
def __init__(self, func, *args, **kw):
self.func = func
self.args = args
self.kw = kw
def __call__(self, *args, **kw):
print "Execing... "
return self.func(*self .args, **self.kw)

class a_func(object):
def __init__(self, func, info = {}): # name, description, authour, etc
self.func = func
self.info = info
print 'finished a_func.__init__ ()'
def __call__(self):
print self.info
self.func()
print 'exiting a_func.__call__ ()'

my_func = a_func(call_me( print_message), {'name': 'Print a message'})
my_func()
another = a_func(call_me( print_num, 42), {'name': 'Print a number'})
another()

[Matthew]

Re: Is this horrible python code?

Sorry, I should add that the code fragment below is just trying to work out
howto construct the python object to hold the runnable and its information.
To test I fudged what would be the results of parsing in 'my_func' and
'another' in __main__.
----- Original Message -----
From: "Matthew" <matthew@newsgr oups.com>
Newsgroups: comp.lang.pytho n
Sent: Thursday, November 06, 2003 8:47 AM
Subject: Is this horrible python code?



"Matthew" <matthew@newsgr oups.com> wrote in message
news:bobjp2$u73 $1@lust.ihug.co .nz...[color=blue]
> Hi,
>
> I am working on a small project as well as trying to learn python. I parse[/color]
a[color=blue]
> text file like
>
> def some_user_func( ):
> # <name> Some user function
> #<description> The description
> pass
>
> so that 'name', 'description' get put into self.info and the code gets
> compilied into a runnable function in self.func. This works but is it
> pythonic?
> Thanks alot for helping out! matthew.
>
> def print_message() :
> print "I am a message"
>
> def print_num(num=0 ):
> print 'Number: ', num
>
> class call_me(object) :
> def __init__(self, func, *args, **kw):
> self.func = func
> self.args = args
> self.kw = kw
> def __call__(self, *args, **kw):
> print "Execing... "
> return self.func(*self .args, **self.kw)
>
> class a_func(object):
> def __init__(self, func, info = {}): # name, description, authour, etc
> self.func = func
> self.info = info
> print 'finished a_func.__init__ ()'
> def __call__(self):
> print self.info
> self.func()
> print 'exiting a_func.__call__ ()'
>
> my_func = a_func(call_me( print_message), {'name': 'Print a message'})
> my_func()
> another = a_func(call_me( print_num, 42), {'name': 'Print a number'})
> another()
>
>[/color]

[Christian Seberino]

Re: Is this horrible python code?

I'd be happy to help except I cannot decipher what you are asking.

Chris


"Matthew" <matthew@newsgr oups.com> wrote in message news:<bobklj$um m$1@lust.ihug.c o.nz>...[color=blue]
> Sorry, I should add that the code fragment below is just trying to work out
> howto construct the python object to hold the runnable and its information.
> To test I fudged what would be the results of parsing in 'my_func' and
> 'another' in __main__.
> ----- Original Message -----
> From: "Matthew" <matthew@newsgr oups.com>
> Newsgroups: comp.lang.pytho n
> Sent: Thursday, November 06, 2003 8:47 AM
> Subject: Is this horrible python code?
>
>
>
> "Matthew" <matthew@newsgr oups.com> wrote in message
> news:bobjp2$u73 $1@lust.ihug.co .nz...[color=green]
> > Hi,
> >
> > I am working on a small project as well as trying to learn python. I parse[/color]
> a[color=green]
> > text file like
> >
> > def some_user_func( ):
> > # <name> Some user function
> > #<description> The description
> > pass
> >
> > so that 'name', 'description' get put into self.info and the code gets
> > compilied into a runnable function in self.func. This works but is it
> > pythonic?
> > Thanks alot for helping out! matthew.
> >
> > def print_message() :
> > print "I am a message"
> >
> > def print_num(num=0 ):
> > print 'Number: ', num
> >
> > class call_me(object) :
> > def __init__(self, func, *args, **kw):
> > self.func = func
> > self.args = args
> > self.kw = kw
> > def __call__(self, *args, **kw):
> > print "Execing... "
> > return self.func(*self .args, **self.kw)
> >
> > class a_func(object):
> > def __init__(self, func, info = {}): # name, description, authour, etc
> > self.func = func
> > self.info = info
> > print 'finished a_func.__init__ ()'
> > def __call__(self):
> > print self.info
> > self.func()
> > print 'exiting a_func.__call__ ()'
> >
> > my_func = a_func(call_me( print_message), {'name': 'Print a message'})
> > my_func()
> > another = a_func(call_me( print_num, 42), {'name': 'Print a number'})
> > another()
> >
> >[/color][/color]

[Michael George Lerner]

Re: Is this horrible python code?

Matthew <matthew@newsgr oups.com> wrote:[color=blue]
> Hi,[/color]
[color=blue]
> class call_me(object) :
> def __init__(self, func, *args, **kw):
> self.func = func
> self.args = args
> self.kw = kw
> def __call__(self, *args, **kw):
> print "Execing... "
> return self.func(*self .args, **self.kw)[/color]

I'm not sure what you're trying to do with the rest of this, but
I think that your call_me class isn't doing what you want.

asteroids% python
Python 2.2 (#1, Feb 18 2002, 14:48:51) [C] on sunos5
Type "help", "copyright" , "credits" or "license" for more information.[color=blue][color=green][color=darkred]
>>> class A(object):[/color][/color][/color]
.... def __init__(self,a ):
.... self.a = a
.... def __call__(self,a ):
.... print "self.a is '%s' and a is '%s'" % (self.a,a)
....[color=blue][color=green][color=darkred]
>>> a = A('the first thing')
>>> a('the second thing')[/color][/color][/color]
self.a is 'the first thing' and a is 'the second thing'[color=blue][color=green][color=darkred]
>>>[/color][/color][/color]

so, i don't think your __call__ method will do what you
want. then again, i'm not exactly sure what you're trying to
do, so i can't figure out why you want to initialize things
your objects with func, args and kw *and* want to be able
to specify args and kw at call time.

-michael

[MetalOne]

Re: Is this horrible python code?

I think it is simpler using closures.

def auditFunc(info, func, *args, **kw):
def inner():
print 'finished a_func.__init__ ()'
print info
print "Execing... "
ret = func(*args, **kw)
print 'exiting a_func.__call__ ()'
return ret

return inner

f = auditFunc({'nam e': 'Print a message'}, print_message)
f()
another = auditFunc({'nam e': 'Print a number'}, print_num, 42)
another()