Create an empty list in python with certain size

Question

I want to create an empty list (or whatever is the best way) that can hold 10 elements.

After that I want to assign values in that list, for example this is supposed to display 0 to 9:

s1 = list();

for i in range(0,9):

s1[i] = i

print s1

But when I run this code, it generates an error or in another case it just displays [] (empty).

Can someone explain why?

Comments

s1 = list();
for i in range(0,9):
   s1 += str(i)

print(s1)

Answer 1

Try this instead:

lst = [None] * 10

The above will create a list of size 10, where each position is initialized to None. After that, you can add elements to it:

lst = [None] * 10

for i in range(10):

lst[i] = i

Admittedly, that's not the Pythonic way to do things. Better do this:

lst = []

for i in range(10):

lst.append(i)

Or even better, use list comprehensions like this:

[i for i in range(10)]

Hope this will help!

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Thanks!