This video tutorial explains how to use default parameter values in Python functions. It covers the concept of required and optional parameters, the rules for defining default parameters, and the implications of using variables as default values. The tutorial emphasizes that default parameters should be placed at the end of the parameter list and warns against using variables as default values due to potential confusion. The video concludes with a summary of best practices for defining default parameter values.

What happens if you call a function with a default parameter without providing a value for that parameter?

• The function will use zero as the default value.

• The function will use the default value specified in the definition.

• The function will prompt the user for a value.

• The function will throw an error.

Which of the following is true about the order of parameters in a function definition with default values?

• Non-default parameters must come before default parameters.

• Default parameters can be placed anywhere in the parameter list.

• Default parameters must come before non-default parameters.

• The order of parameters does not matter.

Why is it not recommended to use variables as default parameter values?

• Because it makes the function definition longer.

• Because it is not allowed in Python.

• Because the variable value can change, leading to unexpected behavior.

• Because it makes the code run slower.

What is the result of calling a function with a default parameter if the variable used as the default value is changed after the function is defined?

• The function will use the new value of the variable.

• The function will not execute.

• The function will throw an error.

• The function will use the original value of the variable at the time of definition.

What is a key consideration when defining functions with default parameter values?

• Default parameters should be at the start of the parameter list.

• Default parameters should be avoided entirely.

• Ensure default parameters are at the end of the parameter list.

• Always use variables for default values.