fromfunc functions

[azrael]

I came across the fromfunc() function in numpy where you pass as an
argument the name of a function as a string and also the atributes for
the desired function.

I find this extremly usefull and sexy. Can someone point me how write
a function of such capabilities

 

[Chris]

I came across the fromfunc() function in numpy where you pass as an
argument the name of a function as a string and also the atributes for
the desired function.

I find this extremly usefull and sexy. Can someone point me how write
a function of such capabilities

class test_class():
def test_func(self, string):
print string

test = test_class()
getattr(test, 'test_class'){'this is the test argument')

getattr raises an Attribute Error though if the function doesn't exist
so you'll need to catch that.

 

[Marc 'BlackJack' Rintsch]

I came across the fromfunc() function in numpy where you pass as an
argument the name of a function as a string and also the atributes for
the desired function.

If you mean `fromfunction()` then you don't give the name of the function
as string but the function itself as argument. And what you call
attributes are arguments.

I find this extremly usefull and sexy. Can someone point me how write
a function of such capabilities

Functions are objects in Python, you can pass them around like any other
object/value.

In [18]: def f(func, arg):
....: return func(arg)
....:

In [19]: f(int, '42')
Out[19]: 42

In [20]: f(str.split, 'a b c')
Out[20]: ['a', 'b', 'c']

Ciao,
Marc 'BlackJack' Rintsch

 

[Chris]

I came across the fromfunc() function in numpy where you pass as an
argument the name of a function as a string and also the atributes for
the desired function.

I find this extremly usefull and sexy. Can someone point me how write
a function of such capabilities

getattr(object, 'function name')(*args)

 

[azrael]

Thaks guys. this helped

 

[castironpi]

Thaks guys. this helped

May I point you to partial:

f= partial( func, arg )
f() -> func( arg )