Python functions within lists

Question

Is there a way of calling like h.append(def function) and define a function that only exists in the array?

Answer 1

17

You can create anonymous functions using the lambda keyword.

def func(x,keyword='bar'):
    return (x,keyword)

is roughly equivalent to:

func = lambda x,keyword='bar':(x,keyword)

So, if you want to create a list with functions in it:

my_list = [lambda x:x**2,lambda x:x**3]
print my_list[0](2)  #4
print my_list[1](2)  #8