python list pick every nth element code example

Example 1: python extract every nth value from list

# Basic syntax:
new_list = your_list[start_index::spacing]

# Example usage using list slicing:
# Say you have the following list and want every third item
your_list = [0,1,2,3,4,5,6,7,8,9]
new_list = your_list[0::3]

print(new_list)
--> [0, 3, 6, 9]

Example 2: every second value python

import numpy as np
values=np.arange(0,10)
print(values[::2])