PART 10 - Python Tutorial | Functions In Python With Examples
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This document provides an overview of functions in Python, covering their definition, usage, and benefits like reusability and avoidance of repetitive code. It explains user-defined versus built-in functions, how to pass information through parameters and arguments, and the difference between positional and keyword arguments. Additionally, it discusses return values and various ways to call functions, including examples involving lists and dictionaries.
PART 10 - Python Tutorial | Functions In Python With Examples
- 1. PART 10 FUNCTIONS IN PYTHON • WANT TO LEARN PYTHON PROGRAMMING? (SUBTITLES) • SUBSCRIBE • TELEGRAM – FreeCodeSchool • Twitter – shivammitra4 • LinkedIn – shivammitra • Link in description
- 2. DEFINING AND CALLING A FUNCTION IN PYTHON
- 3. WHY TO USE FUNCTIONS ? • Reusability – finding greater of two numbers • Avoiding repetitive code • Users do not need to know how function is working
- 4. USER DEFINED VS BUILT-IN FUNCTIONS • print(), len(), sort() – built-in
- 5. PASSING INFORMATION TO A FUNCTION Multiple calls
- 6. FUNCTION PARAMETERS AND ARGUMENTS • Parameters -> Function definition inputs • Arguments -> Function call inputs • Used interchangeably
- 7. PASSING ARGUMENTS TO FUNCTIONS • A function can have multiple parameters • A function call may need multiple arguments • Positional arguments • Keyword arguments
- 8. POSITIONAL ARGUMENTS • Interchange the arguments • Increase/Decrease the number of arguments
- 9. KEYWORD ARGUMENTS • Interchange • Wrong keyword
- 10. DEFAULT VALUES • One can define default values for each function parameter • If an argument for a parameter is not passed, default value is used
- 12. DIFFERENT WAYS OF CALLING A FUNCTION
- 13. RETURN VALUES • A function doesn’t always have to display the output • It can also return value back to the function call • return statement is used
- 15. Return a dictionary Return a list
- 16. USING A FUNCTION WITH WHILE LOOP
- 18. PASSING A LIST TO A FUNCTION
- 19. MODIFYING A LIST IN A FUNCTION
- 20. PREVENTING A FUNCTION FROM MODIFYING A LIST
- 21. MODIFYING A DICTIONARY IN A FUNCTION