In Python 3 please!

The following figure shows the first few rows of a graphic known as Pascal's triangle. 1510 10 51 1 615 2015 61 1 7 21 35 35 271 The triangle may be constructed in the following manner: In row 0 (the topmost row), there is a unique nonzero entry 1. Each entry of each subsequent row is constructed by adding the number above and to the left with the number above and to the right, treating blank entries as 0. For example, the initial number in the first (or any other) row is 1 (the sum of 0 and 1), whereas the numbers 1 and 3 in the third row are added to produce the number 4 in the fourth row. See https:llen.wikipedia.org/wikilPascal's triangle for details Write a function pascal triangle(n) that takes as input a non-negative integer n and returns the See the test cases for examples. nth row of Pascal's triangle as a list