CIT 591 Python Warm-Up Exercises
Fall 2014, David Matuszek

1. [Get started] Log in. Start IDLE. Compute 2+2.


2. [Write a program] From IDLE, open a new window (File -> New Window, or ctrl-N). Write a program to compute and print the result of adding 2 and 2. Save this program (File -> Save or ctrl-S) on a file named test.py, then run it (Run -> Run Module, or F5).


3. [Edit a program] Edit your program to compute and print the result of 13 squared. (You can use 13 * 13, or 13 ** 2 to compute this.) Run the program.
• if IDLE asked you to save the program before running it, do this:
           Options -> Configure IDLE... -> General -> At Start of Run (F5) -> No Prompt.
           Change the program to compute 14 squared, and run it again.
  else:
    pass  # do nothing


4. [Use an if statement] Write a program to ask the user for a number, then print "number is even" if the number is even, or "number is odd" if the number is odd. (Print the actual number instead of number.) A number is even if the remainder (%), when divided by two, is zero. Save your program on a new file with any name you choose (but it must have a .py extension) and run it.


5. [Use a while loop] Write a program to repeatedly do the following: (1) Ask for a number, and (2) print out a message that says what number you entered, and the square of that number (for example, 5 squared is 25). Quit when the number 0 is entered.


6. [Use a for loop] Write a program to print out the numbers 1 through 25 and, for each number, print its square and its cube on the same line.
   
7. [Write a function] Write a function named powers that, given a single integer as a parameter:
   1. Prints the number, the square of the number, and the cube of the number, on a single line.
   2. Returns as its result, a tuple of the three numbers just printed. (A tuple is a parenthesized list of the three numbers.)
   You can try out your function by entering, for example, powers(25) in the Python Shell window.


8. [Write a complete program] Using the powers function, write a program that prints out the numbers 1 through 10, along with their squares and cubes. (Just print the tuples, don't try for neater formatting.)