Podcast Beta
Questions and Answers
Which of the following statements about the scope of a variable is true?
What is the purpose of the finally block in exception handling?
What happens when a function is called with a non-default parameter value?
What is the difference between a function's arguments and parameters?
Signup and view all the answers
What happens when a function encounters a return statement?
Signup and view all the answers
What is the primary reason for using default parameters in a function?
Signup and view all the answers
Which of the following is a characteristic of a built-in function?
Signup and view all the answers
What happens to the flow of execution when a function encounters an exception?
Signup and view all the answers
What is the scope of a variable defined inside a function?
Signup and view all the answers
What is the purpose of the try block in exception handling?
Signup and view all the answers
Study Notes
Functions
- There are three types of functions: built-in functions, functions defined in a module, and user-defined functions
- Built-in functions are pre-defined in Python and can be used directly
- Functions defined in a module are imported from external libraries
- User-defined functions are created by the programmer to perform specific tasks
- A user-defined function can be created using the
defkeyword - Functions can take arguments and parameters, which are values passed to the function when it is called
- Default parameters are assigned a value in the function definition, but can be overridden when the function is called
- Positional parameters are assigned a value based on their position in the function call
Function Execution and Scope
- The flow of execution is the order in which Python executes the code in a program
- When a function is called, the flow of execution jumps to the function and then returns to the point where the function was called
- Variables have scope, which determines where they can be accessed
- Global scope variables can be accessed from anywhere in the program
- Local scope variables are limited to the block of code where they are defined
Exception Handling
- Exception handling is a way to handle errors that occur during program execution
- The
tryblock contains the code that might raise an exception - The
exceptblock contains the code that handles the exception - The
finallyblock contains the code that is executed regardless of whether an exception was raised - Using
try-except-finallyblocks, programmers can anticipate and handle potential errors, making the program more robust and reliable
Functions
- There are three types of functions: built-in functions, functions defined in a module, and user-defined functions
- Built-in functions are pre-defined in Python and can be used directly
- Functions defined in a module are imported from external libraries
- User-defined functions are created by the programmer to perform specific tasks
- A user-defined function can be created using the
defkeyword - Functions can take arguments and parameters, which are values passed to the function when it is called
- Default parameters are assigned a value in the function definition, but can be overridden when the function is called
- Positional parameters are assigned a value based on their position in the function call
Function Execution and Scope
- The flow of execution is the order in which Python executes the code in a program
- When a function is called, the flow of execution jumps to the function and then returns to the point where the function was called
- Variables have scope, which determines where they can be accessed
- Global scope variables can be accessed from anywhere in the program
- Local scope variables are limited to the block of code where they are defined
Exception Handling
- Exception handling is a way to handle errors that occur during program execution
- The
tryblock contains the code that might raise an exception - The
exceptblock contains the code that handles the exception - The
finallyblock contains the code that is executed regardless of whether an exception was raised - Using
try-except-finallyblocks, programmers can anticipate and handle potential errors, making the program more robust and reliable
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Learn about the different types of functions in Python, including built-in, module-defined, and user-defined functions. Understand how to create and use functions with arguments and parameters.
