``` import turtle b = (-42.42) a= abs(b) print(a) ``` ``` from turtle import * color('blue', 'yellow') begin_fill() while True: forward(100) lt(100) print(abs(pos())) if abs(pos()) < 1: break end_fill() #done() ``` ``` print(3.1166837572216805e-13< 1) ``` ``` i = 1 while True: i += 1 print(i) if i == 10: break print(i) ``` ``` from turtle import * title('正方形') #標題 color('blue', 'yellow') a = textinput('旋轉角度','請輸入旋轉角度') begin_fill() while True: forward(100) lt(int(a)) print(abs(pos())) if abs(pos()) < 1: break end_fill() #done() exitonclick() ``` ``` from turtle import * title('多邊形') #標題 color('blue', 'yellow') a = textinput('旋轉角度','請輸入旋轉角度') begin_fill() title('駱天瑞旋轉'+a+'多邊形') #標題 while True: forward(100) lt(int(a)) print(abs(pos())) if abs(pos()) < 1: break end_fill() #done() exitonclick() ``` ``` a = '90' b = '旋轉'+a+'多邊形' #標題 print(b) ```