Pass Function To Function With Different Number Of Variables

Suppose I have a function def foo(A, B). Now I have another function bar(func), where func is a function that takes only one variable. I want to pass in foo as func, but with the s

Solution 1:

You use lambda:

bar(lambda x: foo(x,300))

basically,

func = lambda x: x*x

is more or less equivalent to:

def func(x):
   return x*x

So in this case, we use something that's more or less equivalent to:

defnew_func(x):
    return foo(x,300)

and then we pass the equivalent of new_func to bar.

Solution 2:

Lambda is easiest, but you could also use functools.partial for more complex cases:

import functools

bar(functools.partial(foo, B=300))