for i in range(n): print(" "*(n-i), end="") for j in range(i+1): print(triangle[i][j], end=" ") print()

This code snippet is used to print a triangle shape with numbers.

The first line initializes a loop that runs n times.

The second line prints a number of spaces equal to n-i, which decreases with each iteration of the loop. This is used to align the numbers in the triangle shape.

The third line initializes another loop that runs from 0 to i-1 (since the triangle has i rows and each row has one less number than the row above it).

The fourth line prints the number at the ith row and jth column of the 2D list "triangle", followed by a space.

The fifth line prints a newline character to move to the next row of the triangle.

Note that the 2D list "triangle" is not shown in this code snippet, so it must be defined earlier in the code.