functools partial

The functools.partial allow to  wrapped a method with anew method that has only  partial of the parameters of the wrapped function .
In constract to using lambda for this ‘the functools.partial keep the parameters as reference that can be changed after declaring the wrapper function
Example:

import functools
fullName = lambda pName , pFamily : pName + " "+ pFamily
n = "Zvika"
GetName = lambda y: fullName(n, y)
GetName2 = functools.partial(fullName, n)
print ("n set before creating the lambda")
print (GetName("Peer"), GetName2("Peer"))
print ("n set after creating the lambda")
n = "Alon"
print (GetName("Peer"), GetName2("Peer"))

And the results: 
 n set before creating the lambda
Zvika Peer Zvika Peer
n set after creating the lambda
Alon Peer Zvika Peer

Resources:
http://stackoverflow.com/questions/3252228/python-why-is-functools-partial-necessary