Python: How to append elements to a list using list iterator

Question

Let's say we have an existing empty list, m. I would like to append some elements (let's say three 7's) to m so that m is now [7,7,7]. How to do this using list iterators?

I have the following solution, which is not complete:

m = []
m.append([7 for i in range(3)])

I get m = [[7,7,7]] but not [7,7,7].

I am not looking for post-processing like making m flat such as: flat_list = [item for sublist in l for item in sublist], because it is an extra step.

joe.liedtke · Accepted Answer · 2018-05-29 20:11:55Z

1

You may want to try extend rather than append.

m = []
m.extend([7 for i in range(3)])

Here is a post that may be helpful

answered May 29, 2018 at 20:11

joe.liedtke

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