• 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 16th 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 inches into centimeters and vice versa
• The program must prompt the user for a value in inches
• Then convert this value to centimeters
• 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 centimeters
• This value must be converted to inches
• Then print the converted value
• Again the converted value must be a integer
• You convert inches to centimeters using the formula

  cm = inches * 2.54

• You convert centimeters to inches using the formula

  inches = cm * 0.39370079

Output

• The output should look something like this

  Inches: 6
  Centimeters 15
  
  Centimeters: 15
  Inches 6

• 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 inches and stores it in the variable inches.
   Convert the value of inches using int().
   Write a print statement to print the value of inches.
   Save the file and quit.
   Run the script to make sure it works properly.
   If it does not work, fix the problem.
2. Write an assignment statement that calculates the centimeters value and assigns it to the variable cm.
   Use the formula above and the value of the variable inches.
   Write a print statement to print the rounded Centimeter value.
   Save the file and quit. Run the script to make sure it works properly. An inches value of 6 should give a centimeters value of 15.
   A centimeters value of 15 should give a inches value of 6. If it does not work, fix the problem.
3. Repeat the above to convert centimeters to inches.

Testing on Your Machine

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

  Inches: 6
  Centimeters 15
  
  Centimeters: 15
  Inches 6

• The text in blue is what you enter at the command line

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

• You should see something like this

  Inches: 6
  Centimeters 15
  
  Centimeters: 15
  Inches 6

• The text in blue is what you enter at the command line

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