turtle graphics - How to nest a function inside a function in Python -

i have test code working on learning python , wondering how nest function inside function in python (if possible). here code working with.

import turtle  my_turtle = turtle.turtle()  def square(length, angle):     my_turtle.forward(length)     my_turtle.left(angle)     my_turtle.forward(length)     my_turtle.left(angle)     my_turtle.forward(length)     my_turtle.left(angle)     my_turtle.forward(length)  def repeat(length, angle):     square(length, angle)     my_turtle.left(angle)     square(length, angle)  repeat(50, 45) 

first - indentation wrong.

second - in square, not choose angle (it's kind of done deal).

third - for loops thing:

def square(length):     in range(4):         my_turtle.forward(length)         my_turtle.left(90) 

then can use function like

def three_squares():     in range(20, 80, 20):   # gives [20, 40, 60]         square(i)         my_turtle.left(10) 

python lets pass functions functions, like

def multi(times, inter_angle, action, *args):     # let choose **what action** repeat     _ in range(times):         action(*args)         my_turtle.left(inter_angle)  multi(2, 45, square, 50)   # draws 2 squares offset @ 45 degrees 

while can define function inside function, demonstrated @cdlane, less common thing do; if (a) binding values outer function inner 1 or (b) if want make sure no other functions can call inner one.

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