how to do a one line for loop python code example

Example 1: python for loop one line

>>> x = [1, 2, 3, 4, 5]
>>> y = [2*a for a in x if a % 2 == 1]
>>> print(y)
[2, 6, 10]

Example 2: making lists with loops in one line python

print([i for i in range(10)])