• Due
• What You Need to Do
• Setup On Your Machine
• Specification
• Output
• Suggestions
• Testing on Your Machine
• Copy the Script to Unix
• Testing the Script on Unix (Optional)

Due

Sunday, February 11th at 11:59 PM

What You Need to Do

• Create the script hw3.py
• Make sure it obeys the rules in Rules for Homework Scripts
• Move it to an an hw3 directory on pe15.cs.umb.edu

Setup On Your Machine

• Open a text editor.
  I would suggest the text editor built into the program IDLE.
• Save the file as hw3.py

Specification

• This program will convert miles into kilometers and vice versa
• The program must prompt the user for a value in miles
• Then convert this value to kilometers
• And print the converted value
• The converted value must be an integer
• Then a blank line should be printed
• Now the program must prompt the user for a value in kilometers
• This value must be converted to miles
• Then print the converted value
• Again the converted value must be a integer
• You convert miles to kilometers using the formula

  km = miles * 1.609344

• You convert kilometers to miles using the formula

  miles = km / 1.609344

Output

• The output should look something like this

  Miles: 5
  Kilometers 8
  
  Kilometers: 8
  miles 5

• The text in blue is what the user enters

Suggestions

• Write this script in stages
• Test your script at each step
• Print the steps below
• And check them off as you finish each one

1. Write an assignment statement which asks the user for a value in miles and stores it in the variable miles.
   Convert the value of miles using to an integer using int().
   Write an assignment statement that calculates the kilometer value and assigns it to the variable km.
   Use the formula above and the value of the variable miles.
   Convert km to integer using int().
   Print the value of km.
   Run the script to make sure it works properly.
   A miles value of 5 should give a kilometers value of 8.
   If it does not work, fix the problem.
2. Write an assignment statement which asks the user for a value in kilometers and stores it in the variable km.
   Convert the value of km to an integer using int().
   Write an assignment statement that calculates the miles value and assigns it to the variable miles.
   Use the formula above and the value of the variable km.
   Convert miles to integer using int().
   Print miles.
   Run the script to make sure it works properly.
   A kilometers value of 8 should give a miles value of 5.
   If it does not work, fix the problem.
3. Repeat the above to convert kilometers to miles.

Testing on Your Machine

• Open IDLE
• Use the Open command in IDLE to open hw3.py
• Run your script inside IDLE
• The output should look something like this

  Miles: 5
  Kilometers 8
  
  Kilometers: 8
  miles 5

• The text in blue is what the user enters

Copy the Script to Unix

• Open FileZilla and connect to pe15.cs.umb.edu
• Go to your it116 directory
• Go to your hw directory
• Right-click in the whitespace inside the hw directory
• Enter hw3 in the dialog box
• Click and drag your script from the bottom left panel to the bottom right panel

Testing the Script on Unix (Optional)

• Connect to pe15.cs.umb.edu using an ssh client like putty.exe (Windows) or ssh (Mac)
• Go to the directory for this exercise

  cd  it116/hw/hw3

• Run this script

  python3 hw3.py

• The output should look something like this

  Miles: 5
  Kilometers 8
  
  Kilometers: 8
  miles 5

• The text in blue is what the user enters

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