CODEWITHSUNDEEP
pythonpython-3.xalgorithmlistnested
Mahir Islam
Mahir Islam

Reputation: 1972

How to put elements from a list to a list of list in Python 3?

I am trying to put the elements in list2 inside each of the nested lists in list1. This is what I have tried so far:

list_1 = [[0, 1], [1, 4], [2, 3]]
list_2 = [100, 100, 100]
store_1 = []
for x in list_1:
    for y in list_2:
        x.append(y)
        store_1.append(x)
print(store_1)

But the output is:

[[0, 1, 100, 100, 100], [0, 1, 100, 100, 100], [0, 1, 100, 100, 100], [1, 4, 100, 100, 100], [1, 4, 100, 100, 100], [1, 4, 100, 100, 100], [2, 3, 100, 100, 100], [2, 3, 100, 100, 100], [2, 3, 100, 100, 100]]

The output should be like this:

[[0,1,100],[1,4,100], [2,3,100]]

How can i fix my code to get the desired output?

Upvotes: 2

Views: 66

Answers (2)

Hello.World
Hello.World

Reputation: 740

Without using zip

list_1 = [[0, 1], [1, 4], [2, 3]]
list_2 = [100, 100, 100]
[list_1[idx] + [x] for idx, x in enumerate(list_2)]

> [[0, 1, 100], [1, 4, 100], [2, 3, 100]]

Upvotes: 1

Rakesh
Rakesh

Reputation: 82765

Using zip

Ex:

list_1 = [[0, 1], [1, 4], [2, 3]]
list_2 = [100, 100, 100]
store_1 = [x + [y] for x, y in zip(list_1, list_2)]
print(store_1)

Output:

[[0, 1, 100], [1, 4, 100], [2, 3, 100]]

Upvotes: 5

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