Creating function object from text

[Edward C. Jones]

Suppose I have a piece of text that defines a function:

text ="""\
def fun(i):
return i + 2
"""

How do I turn this into a function object, f, which can be called or
passed around?

[Peter Hansen]

Re: Creating function object from text

Edward C. Jones wrote:
[color=blue]
> Suppose I have a piece of text that defines a function:
>
> text ="""\
> def fun(i):
> return i + 2
> """
>
> How do I turn this into a function object, f, which can be called or
> passed around?[/color]

exec text

If you need to do this other than in the global namespace of the
module, read up on the exec statement and how you can pass in a
dictionary of your own.

-Peter

[George Yoshida]

Re: Creating function object from text

Edward C. Jones wrote:
[color=blue]
> Suppose I have a piece of text that defines a function:
>
> text ="""\
> def fun(i):
> return i + 2
> """
>
> How do I turn this into a function object, f, which can be called or
> passed around?[/color]

Aside from Peter's advice, I'd recommend you to look into timeit.py and
doctest.py.
These two library is a good example of how to use exec and compile in a
real application.

--
George

[Michel Claveau/Hamster]

Re: Creating function object from text

Bonjour !

Ce code fonctionne, chez moi :

src='''def toto(i):
return i*2'''

exec src
print toto(3) # => 6



Mais, dans certains cas, je suis obligé d'ajouter :
global toto



Bonne soirée !

--
Michel Claveau