Python Drawing Exercise Case Sharing

# Examples of polygon drawing
import turtle
def main():
("green")
# steps represents the drawing of polygons
(50,steps=6)
()
if __name__ == "__main__":
main()

# Gerbera Cases *******************************************************************
import turtle
import time
("red","yellow")
turtle.begin_fill()
for _ in range(50):
(0)
(200)
(170)
turtle.end_fill()
()

# Color Pentagram Case ******************************************************************
import turtle
import time
(5)
("yellow")
("red")
turtle.begin_fill()
for _ in range(5):
(200)
(144)
turtle.end_fill()
(2)
()
(-150,-120)
("violet")
("Done",font=("Arial"))
()

# Art Pictures *************************************************************************
import turtle
(0)
(0)
(2)
("black")
colors=["red","blue","yellow","purple"]
for x in range(300):
(colors[x%4])
(2*x)
(91)
()

#blackhexagon *****************************************************************************
import turtle
def bye(x,y):
()
s = ()
("black")
(800,800)
("Class Using")
(bye)
p=()
(0)
()
("red")
(3)
(50,360,6)
()

#drawclock ************************************************************************************************
import turtle as tt
from datetime import *
# What day of the week is the current date
def Week(t):
week = ["Monday.", "Tuesday.", "Wednesday.", "Thursday.", "Friday.", "Saturday.", "Sunday."]
return week[()]
# Get the current time
def Date(t):
y = 
m = 
d = 
cur_hour = ;
cur_min = ;
cur_sec = ;
return "%s-%d-%d %d:%02d:%02d" % (y, m, d, cur_hour, cur_min, cur_sec)
# Move the brush with distance
def movePen(distance):
()
(5)
("blue")
(distance)
()
# Drawing the watch hand
def makeHands(name, length):
# Empty the window and reset the turtule state to the initial state
()
movePen(-length * 0.1)
# Start recording the vertices of the polygon
tt.begin_poly()
(length * 1.1)
# Stop recording polygon vertices
tt.end_poly()
# Return the recorded polygon
handForm = tt.get_poly()
tt.register_shape(name, handForm)
# Initialization
def initial():
global secHand, minHand, hurHand, printer
# Reset direction north (up), positive angle is clockwise
("logo")
# Create and initialize the meter pin
makeHands("secHand", 180)
makeHands("minHand", 150)
makeHands("hurHand", 110)
secHand = ()
("secHand")
minHand = ()
("minHand")
hurHand = ()
("hurHand")
for hand in secHand, minHand, hurHand:
(1, 1, 4)
(0)
# Output text
printer = ()
# Hide the brushes
()
()
# Drawing the dial bezel
def drawClock(R):
# Empty the window and reset the turtule state to the initial state
()
# Brush size
(5)
for i in range(60):
movePen(R)
if i % 5 == 0:
(20)
movePen(-R - 20)
movePen(R + 20)
if i == 0:
# Write text
(int(12), align="center", font=("Consolas", 14, "bold"))
elif i == 30:
movePen(25)
(int(i / 5), align="center", font=("Consolas", 14, "bold"))
movePen(-25)
elif (i == 25 or i == 35):
movePen(20)
(int(i / 5), align="center", font=("Consolas", 14, "bold"))
movePen(-20)
else:
(int(i / 5), align="center", font=("Consolas", 14, "bold"))
movePen(-R - 20)
else:
# Draw points of specified radius and color
(5, "red")
movePen(-R)
(6)
# Dynamic display of hands
def handsMove():
t = ()
second =  +  * 0.000001
minute =  + second / 60.0
hour =  + minute / 60.0
(6 * second)
(6 * minute)
(30 * hour)
(False)
(65)
("green")
(Week(t), align="center", font = ("bold.", 14))
(130)
(Date(t), align="center", font = ("Consolas", 14))
# Set the current brush position to the origin with the direction facing east
()
(True)
# After 100ms continue to call the handsMove function
(handsMove, 100)
# Calls defined functions that turn animations on and off, setting delays for updating drawings;
(False)
initial()
drawClock(200)
(True)
handsMove()
()

# Drawing Fractal Trees ******************************************************************************
import turtle
def draw_branch(branch_length):
'''
Drawing fractal trees
'''
if branch_length > 5:
# Draw the right branch
(branch_length)
print("Forward:", branch_length)
(20)
print("Right turn: 20 degrees.")
draw_branch(branch_length - 15)

# Draw the left branch
(40)
print("Left turn: 40 degrees.")
draw_branch(branch_length - 15)
# Return to the previous branch
(20)
print("Right turn: 20 degrees.")
(branch_length)
print("Backwards:", branch_length)
def main():
'''
Main Functions
'''
(0.5)
(3)
(90)
('green')
()
(150)
()
("black")
draw_branch(100)
()
if __name__ == "__main__":
main()

# Rainbow line drawing examples ***************************************************************************
import turtle as t
from random import randint as rint
("turtle")
(5)
(255)
("black")
(False)
for x in range(700):
(rint(0,255),rint(0,255),rint(0,255))
(2*(1+x/4),5)
(0)
(True)
()