O'Reilly logo

Python: Essential Reference, Third Edition by David Beazley

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

The apply() Function

The apply(funcname, [, args [, kwargs]]) function is used to invoke a function indirectly where the arguments have been constructed in the form of a tuple or dictionary. args is a tuple containing the positional argument to be supplied to the function. If omitted, no arguments are passed. kwargs is a dictionary containing keyword arguments. The following statements produce identical results:

foo(3,"x", name='Dave', id=12345)

or

apply(foo, (3,"x"), { 'name': 'Dave', 'id': 12345 })

In older versions of Python, apply() was the only mechanism for calling a function in which the arguments were contained in a tuple or dictionary. This capability is now handled by the following syntax:

 a = (3,"x") b = { 'name' : 'Dave', 'id': 12345 ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required