Difference between revisions of "CSC111 Lab 11 2015"
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* In case you had implemented a text label as part of your Car class, please remove it. Make sure your program displays only a car with 2 wheels and two rectangles, one for the body, one for the top. | * In case you had implemented a text label as part of your Car class, please remove it. Make sure your program displays only a car with 2 wheels and two rectangles, one for the body, one for the top. | ||
<br /> | <br /> | ||
− | ==Using MyRect to build the Car== | + | ==Using MyRect to build the Body of the Car== |
<br /> | <br /> | ||
* Add your '''MyRect''' class to your program, at the top, before your '''Car''' class. | * Add your '''MyRect''' class to your program, at the top, before your '''Car''' class. |
Revision as of 14:03, 12 April 2015
--D. Thiebaut (talk) 19:36, 11 April 2015 (EDT)
<onlydft>
Very often we are presented with text information in the form of lists. They can be list of email addresses, list of contacts, list of courses, list of students, list of historical facts, list of authors, etc. And very often we need to extract just a few items from the list that are of interest to us. In this lab, you are going to process several lists and extract information from them.
Contents
List of Lists
Demonstration Example
- Create a new new program called Lab11_0.py and copy the code from this program.
- Carefully read the program to see what it does, and how it does it.
- Run the program to verify that it works well.
- Edit the text variable, and make it contain only 5 lines of text (it doesn't matter what countries you pick).
- Run your program again and verify that the "top-10" and "last-10" sections still work and do not crash, even though the list contains fewer than 10 tuples.
- Using a similar approach, solve the next two problems.
Problem 1: Animals
The text below contains names of animals and their speed, expressed in miles per hour. Write a Python program called Lab11_1.py (no need to write classes for this problem) based on the preparation problem above, and make your program output the following quantities:
- The list of all the animals ranked by speed. Fastest first.
- The 10 fastest animals listed in order of decreasing speed
- The 10 slowest animals listed in order of increasing speed
- The ratio of the speeds of the fastest animal versus that of the slowest animal. For example, if the speed of the fastest animal is 50 and the speed of the slowest is 2, then the program should output that the fastest animal is 25 times faster than the slowest one.
- The list of all the animals (just their name, not their speed) that are faster than a human being ("human" is one of the species listed). Your program should not contain the number 27.9, which is the speed of a human. Instead it should find this number by looking up "human" in one of your lists and get the speed associated for the human.
Black Mamba Snake 20.0 mph Cape Hunting Dog 45.0 mph Cat (domestic) 30.0 mph Cheetah 70.0 mph Chicken 9.0 mph Coyote 43.0 mph Elephant 25.0 mph Elk 45.0 mph Giant Tortoise 0.2 mph Giraffe 32.0 mph Gray Fox 42.0 mph Greyhound 39.4 mph Grizzly Bear 30.0 mph Human 27.9 mph Hyena 40.0 mph Jackal 35.0 mph Lion 50.0 mph Mongolian Wild Ass 40.0 mph Mule Deer 35.0 mph Pig (domestic) 11.0 mph Pronghorn Antelope 61.0 mph Quarter Horse 47.5 mph Rabbit (domestic) 35.0 mph Reindeer 32.0 mph Six-Lined Racerunner 18.0 mph Spider (Tegenaria atrica) 1.2 mph Squirrel 12.0 mph Thomson's Gazelle 50.0 mph Three-Toed Sloth 0.1 mph Warthog 30.0 mph Whippet 35.5 mph White-Tailed Deer 30.0 mph Wild Turkey 15.0 mph Wildebeest 50.0 mph Zebra 40.0 mph
Problem 2: Presidents
Below is a CSV list (coma-separated values) of past presidents. Using similar Python code as you have used for the previous problem, write a program (Lab11_2.py) that will process this list and output:
- the list of presidents sorted alphabetically. Your program should simply print the names, one per line. No additional information is required.
- the list of all the presidents who were associated with the democratic party.
- the person who was president in 1945.
- the presidents whose home state was Massachusetts.
Presidency ,President, Took office ,Left office ,Party , Home State 1, George Washington, 30/04/1789, 4/03/1797, Independent, Virginia 2, John Adams, 4/03/1797, 4/03/1801, Federalist, Massachusetts 3, Thomas Jefferson, 4/03/1801, 4/03/1809, Democratic-Republican, Virginia 4, James Madison, 4/03/1809, 4/03/1817, Democratic-Republican, Virginia 5, James Monroe, 4/03/1817, 4/03/1825, Democratic-Republican, Virginia 6, John Quincy Adams, 4/03/1825, 4/03/1829, Democratic-Republican/National Republican, Massachusetts 7, Andrew Jackson, 4/03/1829, 4/03/1837, Democratic, Tennessee 8, Martin Van Buren, 4/03/1837, 4/03/1841, Democratic, New York 9, William Henry Harrison, 4/03/1841, 4/04/1841, Whig, Ohio 10, John Tyler, 4/04/1841, 4/03/1845, Whig, Virginia 11, James K. Polk, 4/03/1845, 4/03/1849, Democratic, Tennessee 12, Zachary Taylor, 4/03/1849, 9/07/1850, Whig, Louisiana 13, Millard Fillmore, 9/07/1850, 4/03/1853, Whig, New York 14, Franklin Pierce, 4/03/1853, 4/03/1857, Democratic, New Hampshire 15, James Buchanan, 4/03/1857, 4/03/1861, Democratic, Pennsylvania 16, Abraham Lincoln, 4/03/1861, 15/04/1865, Republican/National Union, Illinois 17, Andrew Johnson, 15/04/1865, 4/03/1869, Democratic/National Union, Tennessee 18, Ulysses S. Grant, 4/03/1869, 4/03/1877, Republican, Ohio 19, Rutherford B. Hayes, 4/03/1877, 4/03/1881, Republican, Ohio 20, James A. Garfield, 4/03/1881, 19/09/1881, Republican, Ohio 21, Chester A. Arthur, 19/09/1881, 4/03/1885, Republican, New York 22, Grover Cleveland, 4/03/1885, 4/03/1889, Democratic, New York 23, Benjamin Harrison, 4/03/1889, 4/03/1893, Republican, Indiana 24, Grover Cleveland, 4/03/1893, 4/03/1897, Democratic, New York 25, William McKinley, 4/03/1897, 14/9/1901, Republican, Ohio 26, Theodore Roosevelt, 14/9/1901, 4/3/1909, Republican, New York 27, William Howard Taft, 4/3/1909, 4/03/1913, Republican, Ohio 28, Woodrow Wilson, 4/03/1913, 4/03/1921, Democratic, New Jersey 29, Warren G. Harding, 4/03/1921, 2/8/1923, Republican, Ohio 30, Calvin Coolidge, 2/8/1923, 4/03/1929, Republican, Massachusetts 31, Herbert Hoover, 4/03/1929, 4/03/1933, Republican, Iowa 32, Franklin D. Roosevelt, 4/03/1933, 12/4/1945, Democratic, New York 33, Harry S. Truman, 12/4/1945, 20/01/1953, Democratic, Missouri 34, Dwight D. Eisenhower, 20/01/1953, 20/01/1961, Republican, Texas 35, John F. Kennedy, 20/01/1961, 22/11/1963, Democratic, Massachusetts 36, Lyndon B. Johnson, 22/11/1963, 20/1/1969, Democratic, Texas 37, Richard Nixon, 20/1/1969, 9/8/1974, Republican, California 38, Gerald Ford, 9/8/1974, 20/01/1977, Republican, Michigan 39, Jimmy Carter, 20/01/1977, 20/01/1981, Democratic, Georgia 40, Ronald Reagan, 20/01/1981, 20/01/1989, Republican, California 41, George H. W. Bush, 20/01/1989, 20/01/1993, Republican, Texas 42, Bill Clinton, 20/01/1993, 20/01/2001, Democratic, Arkansas 43, George W. Bush, 20/01/2001, 20/01/2009, Republican, Texas
Problem 3: Class Inheritance: Rectangles with Labels Inside
- Create a new program called Lab11_3.py and copy the code below into it.
# lab11_3.py # D. Thiebaut # A graphic program with a new MyRect class that is derived from # the Rectangle class in the graphics.py library. from graphics import * # window geometry WIDTH = 600 HEIGHT = 400 class MyRect( Rectangle ): """MyRect: a class that inherits from Rectangle, in graphics.py""" def __init__( self, p1, p2, labl ): """constructor. Constructs a rectangle with a text label in its center""" # call the Rectangle constructor and pass it the 2 points Rectangle.__init__( self, p1, p2 ) # put a label at a point in-between p1 and p2. midPoint = Point( (p1.getX()+p2.getX())/2, (p1.getY()+p2.getY())/2 ) self.label = Text( midPoint, labl ) def draw( self, win ): """draw the rectangle and the label on the window.""" # call the draw() method of the rectangle class to draw the rectangle Rectangle.draw( self, win ) # then draw the label on top self.label.draw( win ) def main(): # open the window win = GraphWin( "CSC Aquarium", WIDTH, HEIGHT ) # create an object of type MyRect with the string "CSC111" in the middle r1 = MyRect( Point( 100, 100 ), Point( 200, 200 ), "CSC111" ) r1.setFill( "Yellow" ) r1.draw( win ) # close the window when the user clicks the mouse win.getMouse() win.close() main()
- Run the program. Verify that it displays a Yellow rectangle with a string in the middle.
- Add a loop to your main program, that will make the rectangle move to the right:
for i in range( 20 ): r1.move( 10,2 )
- Do you observe something strange? What is happening? Think...
- Think some more. Do not move on until you are sure you know what is going on...
- Ok, if you thought that the inherited move() method from the Rectangle class is not what we want to use, because the original Rectangle class does not know anything about the label, you are totally correct. If, furthermore, you thought you needed to create a new move() method for MyRect() that will override the Rectangle move() method, then I'm really impressed!
- Create a new method called move() and base its design on the draw() method, so that it will call Rectangle.move() to make the yellow rectangle move, and it will activate the move() method of the label to make it move by the same dx, dy displacement.
- Verify that your new program makes the rectangle and the label move together (it's ok if you see some jitter in the motion).
Circles with Labels Inside
- Use the same approach to create a new class called MyCirc that is a subclass of Circle, and that displays a circle with a label inside.
- Modify the loop in your main program so that it makes both the MyRect object and the MyCirc object (that you will have created) move together.
Building a Car with MyRect
- Locate the program you wrote a while back, that displays a car on the graphic window (with a body, two wheels and a top).
- Save your code in a program called lab11_4.py.
- In case you had implemented a text label as part of your Car class, please remove it. Make sure your program displays only a car with 2 wheels and two rectangles, one for the body, one for the top.
Using MyRect to build the Body of the Car
- Add your MyRect class to your program, at the top, before your Car class.
- Modify your Car class so that it uses MyRect instead of Rectangle for its body. Make the label inside the body "TAXI" or whatever name you feel should be on your car. Make sure that this label is the one generated in MyRect. Your Car class should not contain a self.label member variable any longer.
- Verify that your program correctly displays the car.
- Make your car move some deltax, deltay in a loop, the same way you moved the MyRect and MyCirc objects in the previous problem. Verify that the car moves correctly, including its label.
Aquarium
- Point your browser to this page and drag the tank and a couple fish to your desktop.
- Write a new program called lab11_5.py and copy/paste the following code in it:
# lab11_5.py # Displays fish in an aquarium from graphics import * import random WIDTH = 700 # geometry of the tank2.gif file HEIGHT = 517 def main(): # open the window win = GraphWin( "CSC Aquarium", WIDTH, HEIGHT ) # display background image background = Image( Point( WIDTH//2, HEIGHT//2 ), "tank2.gif" ) background.draw( win ) # display the image of a fish at a random location fish = Image( Point( random.randrange( WIDTH), random.randrange( HEIGHT) ), "fish0.gif" ) fish.draw( win ) # close window when user clicks it win.getMouse() win.close() main()
- Create a new class called Fish
- Include a constructor that received the name of the gif file for the fish.
- Include a member variable in the class to hold the image (Image class in graphics.py) of the fish.
- Add a draw() method to the class, that will allow the main program to have the fish draw itself on the graphic window (win).
- Add a moveRandom() method to the class, that will move the image of the fish some random deltaX and deltaY on the graphic window. Reminder: user random.randrange( 10 ) to generate a random number between 0 and 10, and use random.randrange( -10, 0 ) to generate a random number between -10 and 0 (not included).
- Modify the main program so that it simply creates and displays a fish object, as shown below:
def main(): # open the window win = GraphWin( "CSC Aquarium", WIDTH, HEIGHT ) # display background background = Image( Point( WIDTH//2, HEIGHT//2 ), "tank2.gif" ) background.draw( win ) # display a fish fish = Fish( "fish0.gif" ) fish.draw( win ) win.getMouse() win.close()
- When your code works, and only then, add a loop to make the fish move:
def main(): # open the window win = GraphWin( "CSC Aquarium", WIDTH, HEIGHT ) # display background background = Image( Point( WIDTH//2, HEIGHT//2 ), "tank2.gif" ) background.draw( win ) # display a fish fish = Fish( "fish0.gif" ) fish.draw( win ) # animation loop while win.checkMouse() == None: fish.moveRandom() win.getMouse() win.close()
- Modify the moveRandom() method so that the fish disappears from the graphics window, it is moved back on the other side of the aquarium.
- Create a list of 10 fish with the "fish0.gif" image, and add 10 fish with the "fish20.gif" image (or some fish that is headed in the opposite direction).
- Modify the Fish class so that you can define the direction a fish goes into when you create it.
- Verify that the fish swim in the correct direction.
- Demonstrate your program to the lab instructor or a TA when you're done.
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Solution Programs
Animals
# animals.py # D. Thiebaut # parses a list of lines containing # animal information and outputs several # interesting statistics about the quantities # contained in the text. text = """Black Mamba Snake 20.0 mph Cape Hunting Dog 45.0 mph Cat (domestic) 30.0 mph Cheetah 70.0 mph Chicken 9.0 mph Coyote 43.0 mph Elephant 25.0 mph Elk 45.0 mph Giant Tortoise 0.2 mph Giraffe 32.0 mph Gray Fox 42.0 mph Greyhound 39.4 mph Grizzly Bear 30.0 mph Human 27.9 mph Hyena 40.0 mph Jackal 35.0 mph Lion 50.0 mph Mongolian Wild Ass 40.0 mph Mule Deer 35.0 mph Pig (domestic) 11.0 mph Pronghorn Antelope 61.0 mph Quarter Horse 47.5 mph Rabbit (domestic) 35.0 mph Reindeer 32.0 mph Six-Lined Racerunner 18.0 mph Spider (Tegenaria atrica) 1.2 mph Squirrel 12.0 mph Thomson's Gazelle 50.0 mph Three-Toed Sloth 0.1 mph Warthog 30.0 mph Whippet 35.5 mph White-Tailed Deer 30.0 mph Wild Turkey 15.0 mph Wildebeest 50.0 mph Zebra 40.0 mph""" def main(): #---------------------------------------------------------- # display the list sorted by decreasing speed #---------------------------------------------------------- print( "\n\nCOMPLETE LIST, ORDERED BY DECREASING SPEED" ) list = [] for line in text.split( "\n" ): fields = line.split( ) # skip lines that do not contain a valid count of fields if len( fields ) < 3: continue # create a name and a speed name = fields[0:-2] # all fields except last 2 name = " ".join( name ) # join all fields with a space speed = float( fields[-2] ) # one before last field # create a tuple with speed listed first tuple = (speed, name ) # add it to the list list.append( tuple ) # sort the list in increasing order (smallest speed first) list.sort() # reverse the list list.reverse() # display the list for speed, name in list: print( "{0:30} {1:3.1f}".format( name, speed ) ) #---------------------------------------------------------- # display the 10 fastest in order of decreasing speed #---------------------------------------------------------- print( "\n\n10 FASTEST ANIMALS, ORDERED BY DECREASING SPEED" ) for i in range( min( 10, len( list ) ) ): speed, name = list[i] print( "{0:30} {1:3.1f}".format( name, speed ) ) #---------------------------------------------------------- # display the 10 slowest in order of decreasing speed #---------------------------------------------------------- print( "\n\n10 SLOWEST ANIMALS, ORDERED BY INCREASING SPEED" ) list.reverse() for i in range( min( 10, len( list ) ) ): speed, name = list[i] print( "{0:30} {1:3.1f}".format( name, speed ) ) #---------------------------------------------------------- # display the ratio of fastest to slowest #---------------------------------------------------------- print( "\n\nSPEED-RATIO OF FASTEST TO SLOWEST" ) fastestSpeed, fastestName = list[-1] slowestSpeed, slowestName = list[0] print( "The {0:1} is {1:1.0f} times faster than the {2:1}." .format( fastestName, fastestSpeed/slowestSpeed, slowestName )) #---------------------------------------------------------- # display the animals faster than human beings #---------------------------------------------------------- print( "\n\nANIMALS FASTER THAN HUMAN BEINGS" ) # find the speed of the human speedHuman = 0 for speed, name in list: if name.strip().lower()=="human": speedHuman = speed break # create a list of the animals faster than humans list2 = [] for speed, name in list: if speed > speedHuman: list2.append( name ) # sort the list alphabetically list2.sort() # display the list for name in list2: print( "{0:30}".format( name, speed ) ) if __name__=="__main__": main()
Presidents
# presidents.py # D. Thiebaut text="""Presidency ,President, Took office ,Left office ,Party , Home State 1, George Washington, 30/04/1789, 4/03/1797, Independent, Virginia 2, John Adams, 4/03/1797, 4/03/1801, Federalist, Massachusetts 3, Thomas Jefferson, 4/03/1801, 4/03/1809, Democratic-Republican, Virginia 4, James Madison, 4/03/1809, 4/03/1817, Democratic-Republican, Virginia 5, James Monroe, 4/03/1817, 4/03/1825, Democratic-Republican, Virginia 6, John Quincy Adams, 4/03/1825, 4/03/1829, Democratic-Republican/National Republican, Massachusetts 7, Andrew Jackson, 4/03/1829, 4/03/1837, Democratic, Tennessee 8, Martin Van Buren, 4/03/1837, 4/03/1841, Democratic, New York 9, William Henry Harrison, 4/03/1841, 4/04/1841, Whig, Ohio 10, John Tyler, 4/04/1841, 4/03/1845, Whig, Virginia 11, James K. Polk, 4/03/1845, 4/03/1849, Democratic, Tennessee 12, Zachary Taylor, 4/03/1849, 9/07/1850, Whig, Louisiana 13, Millard Fillmore, 9/07/1850, 4/03/1853, Whig, New York 14, Franklin Pierce, 4/03/1853, 4/03/1857, Democratic, New Hampshire 15, James Buchanan, 4/03/1857, 4/03/1861, Democratic, Pennsylvania 16, Abraham Lincoln, 4/03/1861, 15/04/1865, Republican/National Union, Illinois 17, Andrew Johnson, 15/04/1865, 4/03/1869, Democratic/National Union, Tennessee 18, Ulysses S. Grant, 4/03/1869, 4/03/1877, Republican, Ohio 19, Rutherford B. Hayes, 4/03/1877, 4/03/1881, Republican, Ohio 20, James A. Garfield, 4/03/1881, 19/09/1881, Republican, Ohio 21, Chester A. Arthur, 19/09/1881, 4/03/1885, Republican, New York 22, Grover Cleveland, 4/03/1885, 4/03/1889, Democratic, New York 23, Benjamin Harrison, 4/03/1889, 4/03/1893, Republican, Indiana 24, Grover Cleveland, 4/03/1893, 4/03/1897, Democratic, New York 25, William McKinley, 4/03/1897, 14/9/1901, Republican, Ohio 26, Theodore Roosevelt, 14/9/1901, 4/3/1909, Republican, New York 27, William Howard Taft, 4/3/1909, 4/03/1913, Republican, Ohio 28, Woodrow Wilson, 4/03/1913, 4/03/1921, Democratic, New Jersey 29, Warren G. Harding, 4/03/1921, 2/8/1923, Republican, Ohio 30, Calvin Coolidge, 2/8/1923, 4/03/1929, Republican, Massachusetts 31, Herbert Hoover, 4/03/1929, 4/03/1933, Republican, Iowa 32, Franklin D. Roosevelt, 4/03/1933, 12/4/1945, Democratic, New York 33, Harry S. Truman, 12/4/1945, 20/01/1953, Democratic, Missouri 34, Dwight D. Eisenhower, 20/01/1953, 20/01/1961, Republican, Texas 35, John F. Kennedy, 20/01/1961, 22/11/1963, Democratic, Massachusetts 36, Lyndon B. Johnson, 22/11/1963, 20/1/1969, Democratic, Texas 37, Richard Nixon, 20/1/1969, 9/8/1974, Republican, California 38, Gerald Ford, 9/8/1974, 20/01/1977, Republican, Michigan 39, Jimmy Carter, 20/01/1977, 20/01/1981, Democratic, Georgia 40, Ronald Reagan, 20/01/1981, 20/01/1989, Republican, California 41, George H. W. Bush, 20/01/1989, 20/01/1993, Republican, Texas 42, Bill Clinton, 20/01/1993, 20/01/2001, Democratic, Arkansas 43, George W. Bush, 20/01/2001, 20/01/2009, Republican, Texas""" def main(): # remove the first line from the list of lines lines = text.split( "\n" ) lines = lines[1:] # create a list of tuples list = [] for line in lines: fields = line.split( "," ) # skip invalid lines if len( fields ) != 6: continue # create tuple name = fields[1].strip() yearStart = int( fields[2].split( "/" )[2] ) yearEnd = int( fields[3].split( "/" )[2] ) party = fields[-2].strip() state = fields[-1].strip() tuple = ( name, yearStart, yearEnd, party, state ) # add tuple to list list.append( tuple ) #========================================================= # Display the list of presidents in alphabetical order #========================================================= print( "\n\nAlphabetical List".upper() ) list.sort() for name, y1, y2, party, s in list: print( name ) #========================================================= # Display the list of presidents associated with the democratic # party #========================================================= print( "\n\nAlphabetical List of Democrats".upper() ) for name, y1, y2, party, s in list: if party.lower().find( "democra" )!= -1: print( name ) #========================================================= # Display the president in office in 1945 #========================================================= print( "\n\nPresident in office in 1945".upper() ) for name, y1, y2, party, s in list: if y1 <= 1945 <= y2: print( name ) #========================================================= # Display the president whose home state was Massachusetts #========================================================= print( "\n\nPresident from Massachusetts".upper() ) for name, y1, y2, party, s in list: if s.capitalize().find( "Massa" ) != -1: print( name ) if __name__=="__main__": main()
MyRect, MyCirc, Car
# MyRect.py # D. Thiebaut # This program illustrates how to create and use derived classes. # MyRect is derived from Rectangle, in graphics.py # MyCirc is derived from Cirle, also in graphics.py # Car uses a MyRect object for its body, and a Rectangle for its top. from graphics import * WIDTH = 600 HEIGHT = 400 class MyRect( Rectangle ): def __init__( self, p1, p2, labl ): Rectangle.__init__( self, p1, p2 ) midPoint = Point( (p1.getX()+p2.getX())/2, (p1.getY()+p2.getY())/2 ) self.label = Text( midPoint, labl ) def draw( self, win ): Rectangle.draw( self, win ) self.label.draw( win ) def move( self, dx, dy ): Rectangle.move( self, dx, dy ) self.label.move( dx, dy ) class MyCirc( Circle ): def __init__( self, centr, rad, labl ): Circle.__init__( self, centr, rad ) self.label = Text( centr, labl ) def draw( self, win ): Circle.draw( self, win ) self.label.draw( win ) def move( self, dx, dy ): Circle.move( self, dx, dy ) self.label.move( dx, dy ) class Wheel: """a Wheel is 2 concentric circles, the larger one black, the smaller one grey.""" def __init__(self, centr, rad1, rad2 ): # make circ1 the smaller of the 2 circles self.circ1 = Circle( centr, min( rad1, rad2 ) ) self.circ2 = Circle( centr, max( rad1, rad2 ) ) self.circ1.setFill( "grey" ) self.circ2.setFill( "black" ) def draw( self, win ): self.circ2.draw( win ) self.circ1.draw( win ) def move( self, dx, dy ): self.circ2.move( dx, dy ) self.circ1.move( dx, dy ) class Car: def __init__( self, rp, labl ): x = rp.getX() y = rp.getY() p2 = Point( x+180, y+60 ) self.body = MyRect( rp, p2, labl ) self.body.setFill( "yellow" ) self.top = Rectangle( Point( x+10, y-20 ), Point(x+160, y ) ) self.top.setFill( "yellow" ) self.w1 = Wheel( Point( x+20, y+60 ), 20,10 ) self.w2 = Wheel( Point( x+120, y+60 ), 20,10 ) def draw( self, win ): self.body.draw( win ) self.w1.draw( win ) self.w2.draw( win ) self.top.draw( win ) def move( self, dx, dy ): self.body.move( dx, dy ) self.top.move( dx, dy ) self.w1.move( dx, dy ) self.w2.move( dx, dy ) def main(): # open the window win = GraphWin( "CSC111", WIDTH, HEIGHT ) r1 = MyRect( Point( 100, 100 ), Point( 200, 200 ), "CSC111" ) r1.setFill( "Yellow" ) r1.draw( win ) c1 = MyCirc( Point( 200, 200 ), 20, "BALL" ) c1.setFill( "red" ) c1.draw( win ) car = Car( Point( 100,250 ), "TAXI" ) car.draw( win ) while win.checkMouse() == None: for i in range( 20 ): r1.move( 10,2 ) c1.move( 5, 1 ) car.move( 1, 0 ) for i in range( 20 ): r1.move( -10,-2 ) c1.move( -5, 1 ) win.getMouse() win.close() main()
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