Mastering Python Functions and Modules

What is a function in Python?

• A function in Python is a type of variable that stores data.

• A function in Python is a defined block of code that performs a specific task and can take inputs and return outputs.

• A function in Python is a way to create classes and objects.

• A function in Python is a built-in method that cannot be modified.

How do you define a function in Python?

• To define a function in Python, use the syntax: define function_name with parameters and no indentation.

• A function in Python is defined using the syntax: function_name(parameters) followed by a return statement.

• A function in Python is defined using the syntax: def function_name(parameters): followed by an indented block of code.

• Functions in Python are created with the syntax: create function_name(parameters) and a closing bracket.

What is the purpose of the return statement in a function?

• To print output to the console.

• The purpose of the return statement is to exit a function and return a value to the caller.

• To define a function's parameters.

• To create a loop within a function.

What are default arguments in a function?

• Default arguments must always be provided by the user.

• Default arguments are predefined values for function parameters that are used if no argument is provided.

• Default arguments are values that cannot be changed during function execution.

• Default arguments are only used for optional parameters.

How can you pass a variable number of arguments to a function?

• Use a list to pass multiple arguments to a function.

• You can only pass a fixed number of arguments to a function.

• Use *args in Python to accept a variable number of arguments.

• Use **kwargs** in Python to accept a variable number of arguments.

What is a lambda function in Python?

• A lambda function can contain multiple expressions and statements.

• A lambda function is a type of loop used for iteration.

• A lambda function is a built-in function that requires a name.

• A lambda function is an anonymous function defined with the 'lambda' keyword, capable of taking multiple arguments but limited to a single expression.

How do you import a module in Python?

• Modules can be imported by calling their functions directly.

• Import modules using the 'load' command.

• Use the 'require' statement followed by the module name.

• Use the 'import' statement followed by the module name.

What is the difference between a module and a package?

• A module can contain multiple packages; a package cannot contain modules.

• A module is a type of package; a package is a type of module.

• A module is a single file of Python code; a package is a collection of modules in a directory.

• A module is a collection of files; a package is a single file of Python code.

How can you create your own module in Python?

• Create a .py file with functions or classes, then import it in your script.

• Create a .doc file with your code and share it with others.

• Use a .txt file to store your code and run it directly.

• Write your code in a Jupyter notebook without saving it as a module.

What is the purpose of the __name__ variable in a module?

• To identify if a module is run as the main program or imported.

• To store the module's metadata.

• To automatically execute all functions in the module.

• To define global variables for all modules.