Reflection of class on Nov 10th

  In last class, I have leant about how to use turtle module to output simple polygons and further complex combinations by inputting corresponding instructions in Python 3, but I cannot use turtle module to output another normal shape, circle.

  As we all know, if we want to design some fabulous artificial images, circle is the one of the most integral shapes so that I need learn how to output a circle by turtle module. Well, I have got it and utilize it with different polygons to design some interesting images like hexagram after today’s learning of chapter 2.

  In this chapter, circle command is the basic instruction that I can use it by adding radius and extent to create various circles and adding steps and radius to create different polygons which fits in a circle with different radius, that is, more steps the polygons have, more similar as the circle they are. In addition, I can set pen color before I draw the outline of shapes and add color to these various shapes by using begin-fill and end-fill commands which tell the turtle when to start filling from and then when to end filling. And I can also hide the turtle icon when the color filling is ending by using hide-turtle command.

  For repetition, I think I just need create a simple loop to achieve that so it’s not a problem, what I’m interested is the two different ways to describe turtle import. I always use “from turtle import *” command before I begin using turtle module because I don’t need to put “turtle.” in front of every function name which I want to use from the turtle module, it helps me a lot to save time on coding a procedure. But now I know this convenient way does have problem on using the same function name which may be imported from my own defined function. Instead, I can use “import turtle” directly to figure it out.

  As well, I finished all the challenges and created a complex hexagram as I have shown you in class later. But the only drawback was that I used too many repeated statements to achieve that. And I’ll try my best to improve the relative codes in next class.