Creating a circle at each vertex of triangle

Code Explanation

import turtle as t:Turtle will become the letter t.

t.bgcolor("black"):The background color will be black.

t.speed(0):The speed of the turtle will be the fastest.

n = 100: The range will be identified as n.

colors = ["green", "red", "blue"]: The colors will be green, red, and blue.

for i in range(3): Repeat 3 times to draw triangle.

    t.forward(100): The side length of triangle will be 100.

    t.left(120):  Turn the turtle left by 120 angle.

    t.color(colors[i]): Set the turtle color by color list.

    for x in range(n): Make a loop for 100 times.

        t.circle(50): The circle radius will be 50.

        t.left(360/n): Then it will run 360/n left. 

t.exitonclick(): It will be exited on click.