How to access values of list inside list- Python

Question

I'm trying to make a game using pygame but I'm having problems with lists inside other lists.

inside the class of Enemy/Enemy 2 i have the following code:

ei = [[Enemy(), Enemy()][Enemy2()]]

for wave in ei:
    if self in wave:
        print(ei.index(self))

The object is inside the list, I have checked by printing out ei in bulk, however this code just returns 'None'.

I tried to print('True') instead of the index, however it still prints None

Please ensure the code you provided is properly formatted using the syntax highlighting tools, and ensure the indentation here is exactly as the code you have in your own editor. — idjaw, Sep 05 '16 at 20:26
You may [edit] your question to show a [mcve]. We don't know what `self` is in the context you've given — OneCricketeer, Sep 05 '16 at 20:28
Is Enemy and Enemy2 the same class or different classes? Where in the class is this code? In `\_\_init\_\_()`? Is it even in a method? Provide the necessary information and your question will be easier to answer. — Ted Klein Bergman, Sep 06 '16 at 06:26
Possible duplicate of [Access item in a list of lists](http://stackoverflow.com/questions/18449360/access-item-in-a-list-of-lists) — numbermaniac, Sep 06 '16 at 07:16
You missed a comma there? I assume that you want two `waves` (whatever those are) and the first one has two `Enemy` and the second one has a `Enemy2`. The biggest problem is, `self` won't be in `ei`, it would be in `wave`. If you want the index of the wave which contains `self` (not sure, just guessing) then... see my answer. But I am guessing. — MariusSiuram, Sep 06 '16 at 08:26

score 0 · Accepted Answer · answered Sep 06 '16 at 08:28

I am guessing, and there are several problems in your example. But maaaybe you want this:

for index, wave in enumerate(ei):
    if self in wave:
        print(index)

See my comments or elaborate your question --as already recommended by other users, provide a MCVE and fix/explain the variables and classes.

1 Answers1