Is there a way to consistently create objects in python?

Question

I'm trying to make a game with enemies that spawn consistently. I've done something like this in the past but used the exec("enemy%s = Enemy()" % x) command to consistently create instances of a class. I was wondering if there are any more effective ways to do this. Please link me to a duplicate if there are any as I couldn't find any.

I've tried

virus = {virus0 : Virus()}
for x in range(1, 11):
    virus.append((virus : Virus()) % x)

but this returned invalid syntax. I don't know how to correctly do this with a dictionary nor list.

What do you mean? What does `exec` have to do with anything? It's not clear to me exactly what you are asking. — juanpa.arrivillaga, Mar 19 '20 at 05:13
@juanpa.arrivillaga I used the command `exec("enemy%s = Enemy()" % number)` I was just wondering if there was a more effective way to do this. — AlphaZetta, Mar 19 '20 at 05:16
@AlphaZetta **never do that**. Don't dynamically create variables. Instead, use a *container* like a `list` or a `dict`. — juanpa.arrivillaga, Mar 19 '20 at 05:17
@juanpa.arrivillaga Can you please add an answer and explain a bit more? — AlphaZetta, Mar 19 '20 at 05:20
see the following: https://stackoverflow.com/questions/1373164/how-do-i-create-a-variable-number-of-variables — juanpa.arrivillaga, Mar 19 '20 at 05:22
@juanpa.arrivillaga I've looked at the post up and down, tested code out but I still don't know any idea how to do this. It just isn't working. — AlphaZetta, Mar 19 '20 at 05:36
@AlphaZetta that isn't an adequate problem statement. Please edit the question with what you've tried and exactly what "doesn't work" — juanpa.arrivillaga, Mar 19 '20 at 05:37

chepner · Accepted Answer · 2020-03-19T19:31:44.150

1

You don't need x at all; the list indices are the labels.

viruses = [Virus() for _ in range(10)]

or in longer form

viruses = []
for _ in range(10):
    viruses.append(Virus())

Now instead of virus0, virus1, etc, you use viruses[0], viruses[1], etc.

edited Mar 19 '20 at 19:31

answered Mar 19 '20 at 13:01

chepner

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Is there a way to consistently create objects in python?

1 Answers1