Week 2,3

Part 2 Programming Exercise

• lab3q2.py

  
  import sys
  import random
  import time
  import tkinter as tk
  
  class Gui:
      def __init__(self, root):
          self.root = root
          
          self.col = 4
          self.row = 4
          
          self.frame0 = tk.Frame(self.root)
          self.btnReset = tk.Button(self.frame0,text='Reset')
          self.btnReset.bind('', self.reset)
          self.btnReset.pack()
          self.btnRandom = tk.Button(self.frame0,text='Randomize')
          self.btnRandom.bind('', self.randomize)
          self.btnRandom.pack()
          
          self.frame1 = tk.Frame(self.root)
  
          self.seq=[[0 for x in range(self.col)] for y in range(self.row)]
          self.picture=[[0 for x in range(self.col)] for y in range(self.row)]
          self.btn=[[0 for x in range(self.col)] for y in range(self.row)]
  
          for x in range(self.col):
              for y in range(self.row):
                  self.seq[x][y]=x*4+y
                  self.picture[x][y] = tk.PhotoImage(file='./ptr/'+str(x*4+y)+'.gif')
                  self.btn[x][y]=tk.Button(self.frame1,  image=self.picture[x][y],
                                           command= lambda x=x, y=y: self.doClick(x,y))
                  self.btn[x][y].image=self.picture[x][y]
                  self.btn[x][y].grid(column=x, row=y)
        
          self.frame0.pack()        
          self.frame1.pack()                 
  
      def toUp(self,x,y):
          tmp=self.btn[x][y].image
          self.btn[x][y].config(image = self.btn[x][y-1].image)
          self.btn[x][y].image = self.btn[x][y-1].image 
          self.btn[x][y-1].config(image = tmp)
          self.btn[x][y-1].image = tmp        
          self.seq[x][y],self.seq[x][y-1]=self.seq[x][y-1],self.seq[x][y]
                       
      def toDown(self,x,y):
          tmp=self.btn[x][y].image
          self.btn[x][y].config(image = self.btn[x][y+1].image)
          self.btn[x][y].image = self.btn[x][y+1].image
          self.btn[x][y+1].config(image = tmp)
          self.btn[x][y+1].image = tmp
          self.seq[x][y],self.seq[x][y+1]=self.seq[x][y+1],self.seq[x][y]  
  
      def toRight(self,x,y):
          tmp = self.btn[x][y].image
          self.btn[x][y].config(image = self.btn[x+1][y].image)
          self.btn[x][y].image = self.btn[x+1][y].image           
          self.btn[x+1][y].config(image = tmp)
          self.btn[x+1][y].image = tmp
          self.seq[x][y],self.seq[x+1][y]=self.seq[x+1][y],self.seq[x][y]
                 
      def toLeft(self,x,y):
          tmp = self.btn[x][y].image
          self.btn[x][y].config(image = self.btn[x-1][y].image)
          self.btn[x][y].image = self.btn[x-1][y].image                   
          self.btn[x-1][y].config(image = tmp)
          self.btn[x-1][y].image = tmp
          self.seq[x][y],self.seq[x-1][y]=self.seq[x-1][y],self.seq[x][y]
  
      def doClick(self,x, y):
              if ((x == 0) and (y == 0)):                 #top left corner
                  if self.seq[x+1][y]==0: 
                      self.toRight(x, y)
                  elif self.seq[x][y+1]==0:
                      self.toDown(x, y) 
              elif ((x == 0) and (y == self.row-1)):      #bottom left corner
                  if self.seq[x+1][y]==0: 
                      self.toRight(x, y)
                  elif self.seq[x][y-1]==0: 
                      self.toUp(x, y)
              elif (x == 0):                              #left column
                  if self.seq[x+1][y]==0: 
                      self.toRight(x, y)
                  elif self.seq[x][y+1]==0: 
                      self.toDown(x, y)
                  elif self.seq[x][y-1]==0: 
                      self.toUp(x, y)
              elif ( (x == self.col - 1 ) and (y == 0)):  #top right corner
                  if self.seq[x-1][y]==0:
                      self.toLeft(x, y)
                  elif self.seq[x][y+1]==0:
                      self.toDown(x, y)           
              elif (y == 0):                              #top row
                  if self.seq[x+1][y]==0:  
                      self.toRight(x, y)
                  elif self.seq[x-1][y]==0:
                      self.toLeft(x, y)
                  elif self.seq[x][y+1]==0:
                      self.toDown(x, y)
              elif ((x==self.col-1) and (y==self.row-1)): #right bottom corner         
                  if self.seq[x-1][y]==0:
                      self.toLeft(x, y)
                  elif self.seq[x][y-1]==0:
                      self.toUp(x, y)              
              elif (x == self.col - 1):                   #right column      
                  if self.seq[x][y-1]==0: 
                      self.toUp(x, y)
                  elif self.seq[x][y+1]==0:
                      self.toDown(x, y)
                  elif self.seq[x-1][y]==0:
                      self.toLeft(x, y)
              elif (y == self.row - 1):                   #bottom row
                  if self.seq[x][y-1]==0:  
                      self.toUp(x, y)
                  elif self.seq[x-1][y]==0:
                      self.toLeft(x, y)
                  elif self.seq[x+1][y]==0:
                      self.toRight(x, y)
              else:                                       #other positions
                  if self.seq[x-1][y]==0:  
                      self.toLeft(x, y)
                  elif self.seq[x+1][y]==0:
                      self.toRight(x, y)
                  elif self.seq[x][y-1]==0:
                      self.toUp(x, y)
                  elif self.seq[x][y+1]==0:
                      self.toDown(x, y)
                      
      def reset(self, event):
          for x in range(self.col):
              for y in range(self.row):
                  self.seq[x][y]=x*4+y
                  self.btn[x][y].config(image = self.picture[x][y])
                  self.btn[x][y].image=self.picture[x][y]
                  
          self.root.update()
                  
      def randomize(self, event):
          random.seed()
          x = 0
          y = 0
          for i in range(100):
              rand=random.random()
              for j in range(1000000):pass
              self.root.update()
              if ((x == 0) and (y == 0)):                 #top left corner
                  if rand < 0.5: 
                      self.toDown(x, y)
                      y += 1
                  else: 
                      self.toRight(x, y)
                      x += 1
              elif ((x == 0) and (y == self.row-1)):      #bottom left corner
                  if rand < 0.5: 
                      self.toUp(x, y)
                      y -= 1
                  else: 
                      self.toRight(x, y)
                      x += 1
              elif (x == 0):                              #left column
                  if rand < 0.333: 
                      self.toDown(x, y)
                      y += 1
                  elif rand < 0.666: 
                      self.toUp(x, y)
                      y -= 1
                  else: 
                      self.toRight(x, y)
                      x += 1
              elif ( (x == self.col - 1 ) and (y == 0)):  #top right corner
                  if rand < 0.5:
                      self.toDown(x, y)
                      y += 1
                  else:
                      self.toLeft(x, y)
                      x -= 1           
              elif (y == 0):                              #top row
                  if rand < 0.333:  
                      self.toRight(x, y)
                      x += 1
                  elif rand < 0.666:
                      self.toDown(x, y)
                      y += 1
                  else:
                      self.toLeft(x, y)
                      x -= 1
              elif ((x==self.col-1) and (y==self.row-1)): #right bottom corner         
                  if rand < 0.5:
                      self.toLeft(x, y)
                      x -= 1
                  else:
                      self.toUp(x, y)
                      y -= 1              
              elif (x == self.col - 1):                   #right column      
                  if rand < 0.333: 
                      self.toUp(x, y)
                      y -= 1
                  elif rand < 0.666:
                      self.toDown(x, y)
                      y += 1
                  else:
                      self.toLeft(x, y)
                      x -= 1
              elif (y == self.row - 1):                   #bottom row
                  if rand < 0.333:  
                      self.toUp(x, y)
                      y -= 1
                  elif rand < 0.666:
                      self.toLeft(x, y)
                      x -= 1
                  else:
                      self.toRight(x, y)
                      x += 1
              else:                                       #other positions
                  if rand < 0.25:  
                      self.toLeft(x, y)
                      x -= 1
                  elif rand < 0.50:
                      self.toRight(x, y)
                      x += 1
                  elif rand < 0.75:
                      self.toUp(x, y)
                      y -= 1
                  else:
                      self.toDown(x, y)
                      y += 1
                      
  def main():
      root = tk.Tk()
      Gui(root)
      root.mainloop()
  
  if __name__ == '__main__':
      sys.exit(main())
  
  

• lab3q3.py

  
  import urllib.request
  
  fileIn=urllib.request.urlopen('http://personal.cityu.edu.hk/~dcywchan/2004dco10803/datafile1.txt')
  
  byteStr = fileIn.read()
  lines=byteStr.decode('utf-8')
  lineSep=lines.split('\r\n')
  
  clientDT=['Name','Address','Balance']
  clientDL=[]
          
  for e in lineSep:
      if e != '':
          clientRec=e.split('_')
          if len(clientDL) == 0:
              clientDL.append(dict(zip(clientDT,\
                  [clientRec[0],clientRec[1],float(clientRec[3])])))
          else: 
              i = 0
              while i < len(clientDL) and clientDL[i]['Name'] != clientRec[0]:
                  i += 1
              if i == len(clientDL):   
                  clientDL.append(dict(zip(clientDT,\
                  [clientRec[0],clientRec[1],float(clientRec[3])])))
              else:
                  if clientRec[2] == 'D':
                      clientDL[i]['Balance'] += float(clientRec[3])
                  else: clientDL[i]['Balance'] -= float(clientRec[3])
               
  print('%-20s%-30s%10s'%(clientDT[0],clientDT[1],clientDT[2]))
  print('============================================================')    
  for e in sorted(clientDL, key = lambda c: c['Name']):
      if e['Balance'] != 0:
          print('%-20s%-30s%10.2f'%(e['Name'],e['Address'],e['Balance'])) 
            
  fileIn.close()