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---Chapter 2: Draw Circle using Turtle Graphics¶
Adapted from: “Python Playground: Geeky Projects for the Curious Programmer” by Mahesh Venkitachalam (No Starch Press)
This program demonstrates drawing a circle using turtle graphics. This is very similar to using the LOGO language for years gone by.
In file drawcircle.py¶
drawcircle.py
import math
import turtle
# draw the circle using turtle
def drawCircleTurtle(x, y, r):
# move to the start of the circle
turtle.up()
turtle.setpos(x + r, y)
turtle.down()
# draw the circle
for i in range(0, 365, 5):
a = math.radians(i)
turtle.setpos(x + r * math.cos(a), y + r * math.sin(a))
drawCircleTurtle(100, 100, 50)
turtle.mainloop()The above program is directly into Jupyter Lab and executed by the Python Kernel:
Load and Run the Program in Jupyter Lab¶
import os
root_dir = ""
root_dir = os.getcwd()code_dir = root_dir + "/" + "Python_Code/Chapter_2/"os.chdir(code_dir)# %load drawcircle.py
import math
import turtle
# draw the circle using turtle
def drawCircleTurtle(x, y, r):
# move to the start of the circle
turtle.up()
turtle.setpos(x + r, y)
turtle.down()
# draw the circle
for i in range(0, 365, 5):
a = math.radians(i)
turtle.setpos(x + r * math.cos(a), y + r * math.sin(a))
drawCircleTurtle(100, 100, 50)
turtle.mainloop()A window opens up with the output. The output is saved to an image file.
from IPython.display import display
from PIL import Image
img_PIL = Image.open(r'Images/drawcircle.png')
display(img_PIL)