Computer Science CMU Exam with Questions
and Correct Answers
Rotating star - ✔✔app.background = gradient('black', 'midnightBlue', 'blue', start='left-top')
# background
Polygon(0, 0, 400, 220, 400, 400, 220, 400, fill='white', opacity=30)
# halo and the star
halo = Circle(0, 0, 30, fill=gradient('white', 'gold'), opacity=50)
halo.isGrowing = True
star = Star(0, 0, 1, 5, fill=gradient('lightYellow', 'gold'))
def onKeyHold(keys):
# Check if the halo is growing and add or subtract accordingly from its size.
### Place Your Code Here ###
if(halo.isGrowing==True):
halo.radius+=1
else:
halo.radius-=1
# If the radius is bigger than 50 or smaller than 20, change halo.isGrowing.
### Place Your Code Here ###
if(halo.radius>50):
halo.isGrowing=False
elif (halo.radius<20):
halo.isGrowing=True
# If right is held, increase the centerX, centerY, and rotateAngle by 5
# and the radius by 1. Also, wrap around from right-bottom corner to left-top
# corner and reset the radius of the star to 1.
### Place Your Code Here ###
if('right'in keys):
star.centerX+=5
star.centerY+=5
, star.rotateAngle+=5
star.radius+=1
if(star.centerY>=400):
star.centerY=0
star.centerX=0
star.radius=1
halo.centerX = star.centerX
halo.centerY = star.centerY
surprised face - ✔✔app.background = 'seaGreen'
# eyes
Oval(110, 120, 70, 120, fill='white')
Oval(290, 120, 70, 120, fill='white')
Oval(110, 120, 50, 80, fill=gradient('skyBlue', 'skyBlue', 'blue'))
Oval(290, 120, 50, 80, fill=gradient('skyBlue', 'skyBlue', 'blue'))
Oval(110, 120, 30, 50)
Oval(290, 120, 30, 50)
mouth = Oval(200, 320, 40, 5, fill='pink', border='black', borderWidth=4)
def expandHorizontal():
mouth.left -= 2
mouth.width += 2
mouth.centerX = 200
def expandVertical():
mouth.top -= 2
mouth.height += 2
mouth.centerY = 320
def onKeyHold(keys):
if(('left'in keys) and ('right'in keys)):
expandHorizontal()
elif(('up' in keys) and("down" in keys)):
and Correct Answers
Rotating star - ✔✔app.background = gradient('black', 'midnightBlue', 'blue', start='left-top')
# background
Polygon(0, 0, 400, 220, 400, 400, 220, 400, fill='white', opacity=30)
# halo and the star
halo = Circle(0, 0, 30, fill=gradient('white', 'gold'), opacity=50)
halo.isGrowing = True
star = Star(0, 0, 1, 5, fill=gradient('lightYellow', 'gold'))
def onKeyHold(keys):
# Check if the halo is growing and add or subtract accordingly from its size.
### Place Your Code Here ###
if(halo.isGrowing==True):
halo.radius+=1
else:
halo.radius-=1
# If the radius is bigger than 50 or smaller than 20, change halo.isGrowing.
### Place Your Code Here ###
if(halo.radius>50):
halo.isGrowing=False
elif (halo.radius<20):
halo.isGrowing=True
# If right is held, increase the centerX, centerY, and rotateAngle by 5
# and the radius by 1. Also, wrap around from right-bottom corner to left-top
# corner and reset the radius of the star to 1.
### Place Your Code Here ###
if('right'in keys):
star.centerX+=5
star.centerY+=5
, star.rotateAngle+=5
star.radius+=1
if(star.centerY>=400):
star.centerY=0
star.centerX=0
star.radius=1
halo.centerX = star.centerX
halo.centerY = star.centerY
surprised face - ✔✔app.background = 'seaGreen'
# eyes
Oval(110, 120, 70, 120, fill='white')
Oval(290, 120, 70, 120, fill='white')
Oval(110, 120, 50, 80, fill=gradient('skyBlue', 'skyBlue', 'blue'))
Oval(290, 120, 50, 80, fill=gradient('skyBlue', 'skyBlue', 'blue'))
Oval(110, 120, 30, 50)
Oval(290, 120, 30, 50)
mouth = Oval(200, 320, 40, 5, fill='pink', border='black', borderWidth=4)
def expandHorizontal():
mouth.left -= 2
mouth.width += 2
mouth.centerX = 200
def expandVertical():
mouth.top -= 2
mouth.height += 2
mouth.centerY = 320
def onKeyHold(keys):
if(('left'in keys) and ('right'in keys)):
expandHorizontal()
elif(('up' in keys) and("down" in keys)):
