To Course Home Page

IT 211 -- Examples

Index of Examples

• Terminal I/O:   Hello  Greeter1  Greeter2  FrenchFlag
• Computations:   Cel2Fahr  Distance  Overtime  Cel2FahrWithValidation  Trace1
• Classification: TempDesc  ChineseHoroscope  LeapYear  Trace2  EnglishTeacher 
• Random Output: CoinFlip  Magic8Ball  ConsultantBSGenerator  Craps 
• Indefinite Loops: CountTo100  CountDownBy7s  LongSong  HailStone  Trace3  Trace4  DeafGrandma 
• Comparison and Logical Operators: Trace5  Trace6
• Double For Loops: LetterH  LetterZ LetterZ-2 LetterHPpm LetterZPpm
• User Defined Standalone Methods: StateRiddles  ToFahr  OldMcDonald  MySqrt
• Folders and Files: CreateFolders1  CreateFolders2  RenameFiles  MakeBackups  SequenceNumbers
• JavaScript Object Notation (JSON): KidsJson  GradeRecordsJson
• User Defined Classes: Person  Pet  BankAccount  Card  VendingMachine

• Hello Example -- Print a "Hello, World" message to the console.
• Greeter1 Example -- Input a name, then print a greeting to that person.
• Greeter2 Example -- Input name, color, background color, font family, and font size. Output an HTML page containing a greeting.
• FrenchFlag Example -- Output ppm image of the French national flag.

Computations

• Cel2Fahr Example -- Convert Celsius temperature to Fahrenheit.
• Distance Example -- Compute distance "as the crow flies" in blocks from a location to city center.
• Overtime Example -- Input hours worked and hourly wage; compute total wages.
• Cel2FahrWithValidation Example -- Convert a Celsius temperature to Fahrenheit. Don't allow input temperatures less than absolute zero.
• Trace1 Example -- Draw the variable trace table and predict output.

Classification

• TempDesc Example -- Classify a Fahrenheit temperature as cold, chilly, perfect, warm, or hot.
• ChineseHoroscope Example -- Obtain Chinese Horoscope animal based on year of birth.
• LeapYear Example -- Classify a year as leap year or not a leap year according to the Gregorian calendar.
• Trace2 Example -- Construct variable trace and predict output.
• EnglishTeacher Example -- Mrs. Gabbard is a strict seventh grade teacher that doesn't tolerate sloppy spelling.

Random Output

• CoinFlip Example -- Show random output for simulated coin flip.
• Magic8Ball Example -- Show a random response from a Magic Eight Ball fortune telling ball.
• ConsBSGen Example -- Construct random consultant sentence containing of a random verb, adjective, and noun.
• Craps Example -- Play a simulated game of Craps.
  Rules of Craps for one turn: roll the pair of dice:
  
  1. If the sum of the dice is 7 or 11, you win;
  2. else if the sum of the dice is 2, 3, or 12, you lose;
  3. else the sum establishes the point. Continue to roll the dice until you the sum is 7 or the sum is equal to the point again. If the sum was a 7, you lose; else if the sum was the point, you win.
  Repeat this turn as many times as you wish. If you lose the turn, you lose your bet. If you win the turn, you win the amount of your bet.

Indefinite Loops

• CountTo100 Example -- Count to 100 (1, 2, 3, ..., 99, 100).
• CountDownBy7s Example -- Count from 1000 to 1 backwards by sevens.
• LongSong Example -- Display all verses of the song "99 Bottles of Beer on the Wall".
• HailStone Example -- Print the HailStone sequence corresponding to a positive integer input.
• Trace3 Example -- Construct variable trace and predict output.
• Trace4 Example -- Construct variable trace and predict output.
• DeafGrandma Example -- Unless you shout (all uppercase letters) grandma can't hear you. If you say BYE Grandma pretends not to hear you because she doesn't want you to leave. You must repeat BYE three times before you can leave.

Comparison and Logical Operators

• Trace5 Example -- Construct variable trace and predict output.
• Trace6 Example -- Construct variable trace and predict output.

Double For Loops

• LetterH Example -- Draw the letter H using double for loops.
• LetterZ Example -- Draw the letter Z using double for loops.
• LetterZ-2 Example -- Draw the letter Z using user defined methods.
• LetterHPpm Example -- Draw the letter H using double for loops to a PPM file: h.ppm
• LetterZPpm Example -- Draw the letter Z using double for loops to a PPM file: z.ppm

User Defined Standalone Methods

• StateRiddles Example -- Use methods to display riddles about various states.
• ToFahr Example -- Use a method to convert a Celsius temperature to Fahrenheit.
• OldMcDonald Example -- Use methods to display the song OldMacDonald Had a Farm. An example of code reuse.
• MySqrt Example -- Compute the square root of a float with a user-defined method. You don't have to understand how the method works to use it. You only need to know the inputs the the expected output of the method. This is an example of encapsulation.

Folders and Files

• CreateFolders1 Example -- Create folders from list of folder names.
• CreateFolders2 Example -- Create folders from folder names read from foldernames.txt file.
• RenameFiles Example -- Rename files based on a list of original and new file names. In the same folder that contains the script renamefiles.py, create a folder named originals; in this originals folder copy these four files: one.txt, two.txt, three.txt, and four.txt.
• MakeBackups Example -- Make backup files of all files in a folder. The module name shutil means "shell utilities." In the same folder that contains the script makebackups.py, create a folder named originals; in this originals folder copy these four files: barcelona.txt, munich.txt, paris.txt, and zurich.txt.
• SequenceNumbers Example -- Add sequence numbers to filenames.

JavaScript Object Notation (JSON)

• KidsJson Example  kids2json.py -- Convert data in a comma delimited text file to JSON;  answerquestions.py -- Answer questions from data in a JSON file;  Input file: kids.txt;  Output file: kids.json 
• GradeRecordsJson Example  graderecords2json.py -- Convert data in a comma delimited text file to JSON;  answerquestions.py -- Answer questions from data in a JSON file;  Input file: grade-records.txt;  Output file: grade-records.json 

User Defined Classes

Answers to Review Exercise 1 and to Review Exercise 2 on May 23: identified items in classes, variable trace and output for test2.py files.

• Person Example   Person Class   Test Script -- Create a person class with instance variables name, gender, age and method have_birthday.
• Pet Example   pet.py   test1.py   test2.py -- Define and test a Pet class.
• BankAccount Example   bankaccount.py   test1.py   test2.py -- Define and test a BankAccount class.
• Card Example   card.py   test1.py   test2.py -- Define and test a Card class.
• VendingMachine Example   vendingmachine.py   test1.py -- Define and test a VendingMachine class.