SDD

• What is Python?


  Python is a high-level programming language used to develop software.
• When was Python first released?


  Python was first released in 1991.
• What are the advantages of using Python?


  • Free to download
  • Easy to install
  • Works on almost every computer
  • Comes preinstalled in all Raspberry Pi’s
  • Extremely readable with enforced indentation
  • Uses less code than other languages
  • Vast number of useful libraries
  • Useful error messages
• What programming paradigms can Python be used for?

  • Object-Oriented programming
  • Imperative programming
  • Scripting language
  • Functional programming
  • Procedural programming
  • Event-driven programming
• What is Python IDLE?


  Python IDLE stands for Integrated Development and Learning Environment.
• What features does Python IDLE include?


  • Multi-window text editor
  • Syntax highlighting
  • Auto-completion
  • Smart indent
  • Integrated debugger
• How do you create a new program in Python IDLE?


  Select "New File" from the "File" menu or use the shortcut Ctrl+N.
• What file extension should all Python programs have?


  All Python programs should end in ".py".
• Why is it important to give meaningful names to Python programs?


  Meaningful names help identify the function of the program in the future.
• What is the purpose of adding comments in Python code?


  • Improve readability of the code
  • Explain what the program is doing
  • Highlight important sections
  • Remind the programmer of how their code works
• How do you start a multi-line comment in Python?


  A multi-line comment starts with three quotation marks (""").
• How do you add a single line comment in Python?


  A single line comment is added using a hash (#) symbol.
• What are the rules for naming variables in Python?


  • Must begin with a letter or underscore
  • Can include letters, numbers, or underscores
  • Case sensitive
  • Can be any reasonable length
  • Cannot use reserved words
• What is a variable in Python?


  A variable is a storage location in memory that can store a value used within a program.
• What are the five variable types you need to know for National 4/5 Computing Science?

  • Integer
  • Float
  • Char
  • String
  • Boolean
• What is the purpose of type casting in Python?


  Type casting is used to change the data type of a variable throughout a program.
• What is input validation in programming?


  • Checks if user input is of the correct type
  • Ensures input is within the correct range
  • Uses Boolean, WHILE loops, and IF statements
• What is the purpose of arrays in Python?


  • Store multiple pieces of data in a single data structure
  • Must contain the same data type
  • Each piece of data is identified by an index starting at zero
• What is the index in an array?


  The index is a number that uniquely identifies each piece of information in an array.
• What is the Fibonacci sequence?


  • A sequence of numbers where each number is the sum of the two preceding ones
  • Starts with 0 and 1
  • Example: 0, 1, 1, 2, 3, 5, ...
• What is the purpose of the "valid age.py" program?


  It checks if the entered age is valid (between 0 and 120).
• What should the program "valid password.py" do?


  It should ask for a password and display a message based on the correctness of the input.
• What is the task of the program "valid year.py"?


  It should ask the user for their name and their current year in high school.
• What is the significance of the phrase "Garbage in: Garbage out!" in programming?


  • Highlights the importance of input validation
  • Indicates that incorrect input leads to incorrect output
• What are nested loops used for in programming?


  • To iterate over multiple dimensions of data
  • To perform repetitive tasks within repetitive tasks
• What is the task of the program "total calories.py"?


  It asks pupils to enter how many calories they had for each meal and totals them up.
• What is the task of the program "nested numbers.py"?


  It displays a specific pattern using nested loops.
• What is the task of the program that displays the 2 times table?


  It uses nested loops to display the 2 times table.
• What is the name of the program that asks the user for their name and year of High School?


  valid year.py
• What years of High School does the program accept as valid input?

  1st, 2nd, 3rd, 4th, 5th, and 6th
• What is the name of the program that tracks calories for five pupils?


  total calories.py
• What is the purpose of the nested loops in the calorie tracking program?


  • Ask each pupil for calories consumed at breakfast, lunch, and dinner
  • Total the calories for the day
  • Display the results
• What is the name of the program that displays a nested loop of numbers?


  nested numbers.py
• What is the name of the program that displays the 2 times table using nested loops?


  two times table.py
• How many times does the example loop display "Hello" and what is the final value of the counter?


  10 times, counter value is 9
• How can the user specify how many times the code loops in the example provided?


  By inputting a number when prompted
• What is the name of the program that asks the user how many times to display their name?


  looped name.py
• What is the name of the program that displays numbers 1-20 using a fixed loop?


  number line loop.py
• What is the name of the program that displays the products of the 2 times table up to 40?


  times table loop.py
• What is the name of the program that displays negative numbers using a fixed loop?


  negative number loop.py