Python error?

Question

Will python give me a recursion error if i just link a lot of functions?
Ex:
def a():
b()
def b():
a()
a()

This is just an example. Usually i dony need to do that for infinite number of functions:)

Answer 1

@nick: this is called mutual recursion or cross recursion
If you try it, you'll see that the maximum recursion depth is exceeded. Which indicates there IS recursion

Answer 2

i didnt know that there is a shuffle method:)

Answer 3

i know,first i was doing return b(), but that didnt worked

Answer 4

so a returns b(x) and b returns a(y) etc. i was using that for shuffleing a card deck. PS sorry for my bad english

Answer 5

I don't understand how it would apply to shuffling a card deck. You could just use a list, import the random class, and use the shuffle method. Something like:

from random import shuffle

cards = list(range(52))
random.shuffle(cards)

If you wanted, you could also use a dictionary to easily label the cards, but since it has an undefined order, you would have to get each key into a list, shuffle them, then reassign them.

Answer 6

This wouldn't really be recursion, since the functions aren't calling themselves. This is more of an infinite loop, and it wouldn't cause an error. But you do have to make a condition to exit the infinite loop at some point.

Answer 7

Why would you return a function? You could try using b as an argument to a instead. There also is this technique called currying, wherein you nest a function inside another function, so that when you declare the first function, you can use it as the argument to another.