H466 - Global and Local Variables

What is a global variable in Python?

• A variable that is defined inside a function and can only be accessed within that function.

• A variable that is defined outside of all functions and can be accessed by any function in the program.

• A variable that is defined inside a loop and can only be accessed within that loop.

• A variable that is defined inside a class and can only be accessed by methods of that class.

What is a local variable in Python?

• A variable that is defined outside of all functions and can be accessed by any function in the program.

• A variable that is defined inside a function and can only be accessed within that function.

• A variable that is defined inside a loop and can only be accessed within that loop.

• A variable that is defined inside a class and can only be accessed by methods of that class.

What is the scope of a variable?

• The data type of the variable.

• The lifetime of the variable.

• The part of the program where the variable can be accessed.

• The value assigned to the variable.

What is the lifetime of a variable?

• The duration for which the variable retains its value during the execution of the program.

• The part of the program where the variable can be accessed.

• The data type of the variable.

• The value assigned to the variable.

How can you access a global variable inside a function in Python?

• By using the `global` keyword before the variable name.

• By using the `local` keyword before the variable name.

• By using the `global` keyword after the variable name.

• By using the `local` keyword after the variable name.

What happens if you try to access a local variable outside its function?

• The program will run without any errors.

• The program will throw a NameError.

• The program will automatically convert it to a global variable.

• The program will ignore the variable.

Which of the following statements is true about the scope of a global variable?

• It is limited to the function in which it is defined.

• It is limited to the module in which it is defined.

• It is accessible throughout the entire program.

• It is limited to the class in which it is defined.

Which of the following statements is true about the lifetime of a local variable?

• It exists as long as the program is running.

• It exists only during the execution of the function in which it is defined.

• It exists until the module is reloaded.

• It exists until the class is instantiated.

How can you modify a global variable inside a function?

• By using the `global` keyword before the variable name.

• By using the `local` keyword before the variable name.

• By using the `modify` keyword before the variable name.

• By using the `change` keyword before the variable name.

What is the default scope of a variable defined inside a function?

• Global

• Local

• Module

• Class