CODEWITHSUNDEEP
python
Codeninja
Codeninja

Reputation: 23

Take elements from a specific part of an array

How can I select and take elements from the third element to the last?

names = [1,2,3,45,12]

Upvotes: 1

Views: 6627

Answers (2)

Chrissu
Chrissu

Reputation: 417

names = [1,2,3,45,12]

You can access only certain parts of an array with slicing:

slicednames = names[2:]
[3,45,12]

This will save all elements from names to the new array, starting with the 3rd element.

If you put a second number in, you can specify the last element that is taken from the array as well:

slicednames = names[2:4]
[3,45]

This would copy only the elements 3 and 4. (The end limit is excluded, while the starting index is included.

If there is another colon followed by another number, its the size of the steps.

slicednames = names[::2]
[1,3,12]

So this would copy every second element of the array. (Starting with the first one, if not specified otherwise)

You should read about slicing, it is a basic and very useful tool to have in your belt.

Upvotes: 3

Novak254
Novak254

Reputation: 549

You can slice an array from a certain index to the end or to another position as shown below

new_names = names[2:]

The above will slice from third to the last index

Upvotes: 4

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