Turtle and loops – Solution [3]

The command for repeats part of a program. It repeats commands that are indented after for. It's the same as with if - it applies only to commands that are indented below.

The command for x in range(n): repeats the commands below n times and it increments the variable x gradually from 0 to n-1.

The command for x in a, b, c, d, ...: repeats the commands below; it changes the variable x gradually to a, b, c d, ...

In computer programming, a loop is a sequence of instructions that is continually repeated until a condition is reached. Very powerful concept allowing you to significantly reduce duplication of commands.