Practice with interactive mode

• Run IDLE on your machine
• Write a while loop
  

  numb = 0
  while numb < 10:
       numb = numb + 1
  
  numb

• Write a while loop to add the numbers from 1 to 100
  

  num = 0
  total = 0
  while num <= 100:
       num = num + 1
       total = total + num
  
  total
  5151

• Write a data validation loop
  

  done = False
  while not done:
       num = int(input('Please enter a number greater than 0: '))
       if num > 0:
               done = True
       else:
               print(num, 'is not greater than 0')
   

• Write an infinite loop
  

  while True:
      print("Are we there yet?")

  You many have to hit Control C many times to stop this loop.

Script for this exercise

• Open a text editor
  Use the editor built into IDLE.
• Copy the text below into the file

• Save the file as ex9.py
  
• Run this script in IDLE
  Open the script file in IDLE. Under the Run menu, select Run Module.
• You should see
  

  Entering while loop
  number: 0
  number: 1
  number: 2
  number: 3
  Left while loop
  number: 4
  
  The sum of all the numbers from 1 to 100 is 5050
  
  Are we there yet? no
  Are we there yet? no
  Are we there yet? no
  Are we there yet? yes
  Yeah!
  
  Please enter an integer greater than 0: -1
  -1 is not greater than 0
  Please enter an integer greater than 0: 0
  0 is not greater than 0 
  Please enter an integer greater than 0: 5
  5

Copy the file to Unix

• Open FileZilla and connect to pe15.cs.umb.edu
  You will have to connect using your Unix username and password.
• Go to your 116 directory
• Go to your ex directory
• Inside this directory create the directory ex9
  Right-click in the whitespace inside the ex directory.
  Click and drag down to Create directory.
  Add ex9 to the path in the dialog box.
  Click OK.
• Copy your script to pe15
  Click and drag your ex9.py file to the ex9 directory

Running my test script on your script (Optional)

• If you want to run my text script on your Class Exercise script do the following
• Connect to pe15.cs.umb.edu
  Use an ssh client.
• Run my test code on your script
  

  ~ghoffman/it116_test/ex09.sh

  The script will prompt you for your Unix username.