Computer science

• Functions in programming are groups of related statements that perform specific tasks

  • Help in dividing a large program into smaller, more manageable chunks

  • Example: Creating functions for drawing circles, rectangles, and coloring shapes based on user input

• Creating a function in Python

  • Use the def keyword followed by the function name and a colon

  • Need to define the function before calling it

Chapter 2: Call The Function

• Calling a function in Python

  • Use the function name followed by empty parentheses to call it

  • Function body executes when the function is called

• Functions can be called multiple times

  • Allows for performing a task repeatedly by calling the function again

Chapter 3: The Great Function

• Importance of defining a function before using it

• Introduction to Python arguments

  • Passing values (arguments) to a function

  • Example: Passing a name to the greet function to make it more personal

Chapter 4: Inside The Function

• Passing multiple arguments to a function by separating them with commas

• Using the return statement to return a value from a function

• Control of the program returns to the calling point when a return statement is encountered

Chapter 5: Create A Function

• User-defined functions are functions created by the programmer

• Example of creating a function to add two numbers and using the return statement to return the result

• Control of the program returns to the calling point after encountering a return statement

Chapter 6: Sum Of Marks

• Print function is a built-in function in Python

  • Defined within Python programming language

  • Makes it easy to display output

• Built-in functions in Python

  • Examples: float, int, input

  • Numerous built-in functions available

• Using built-in functions

  • Example: finding length of a list using len()

  • Example: finding sum of items in a list using sum()

• Accessing built-in functions

  • Available on programiz.com

• Applying learned concepts

Chapter 7: Great Average Marks

• Problem scenario: finding average marks and determining grade

• Creating functions

  • Function to find average marks

    • Parameters: list of marks

    • Calculating average marks

  • Function to compute grade

    • Parameters: average marks

    • Determining grade based on rules

• Implementing functions

  • Calculating average marks and grade

  • Displaying results

Chapter 8: Call The Function

• Programming task: adding and multiplying 2 numbers

• Creating functions

  • add_numbers() and multiply_numbers()

  • Computing and returning results

• Accessing results outside functions

• Resources on GitHub and programiz.com

Chapter 9: Conclusion

• Functions in Python

  • Defined using def keyword

  • Calling functions to execute tasks

• Passing values to functions

  • Arguments or parameters

• Return statement

  • Returns value from function and exits

• Encouragement to practice coding