Python Module 4 Quiz Notes

Defining a function in Python

Uses the keyword 'def', followed by the function name and parentheses.

Keyword used to start a function definition

def

What does 'fun()' indicate in Python?

It signifies a function named 'fun' that doesn't take any parameters.

What is a default parameter in Python?

A parameter that has a default value provided when no value is passed during function call.

When can you invoke a function with a default parameter?

With exactly one argument or without any argument.

Built-in functions in Python

Functions like print(), len(), and input() that are available by default without import statements.

What is a sequence type in Python?

A type of data structure that maintains the order of elements, such as lists and tuples.

Indexing in Python sequences

Accessing an element by its position in the sequence.

What happens when you call a function without providing required parameters?

Python throws a TypeError indicating a missing required positional argument.

What does 'None' represent in Python?

A special value indicating no value or a null value.

Why does a TypeError occur when adding an integer to None?

Python does not support arithmetic operations between integers and NoneType.

How does slicing work with tuples in Python?

Returns a new tuple containing a subset of the original tuple's elements based on specified indices.

Why does the output of a code snippet return 4?

Due to the specific calculations made by the function using its parameters or default values.

What will happen if you overwrite a global variable with a function name?

The global variable is shadowed, causing errors when trying to use it.

What is the result of a function call with keyword arguments?

Arguments can be passed in any order as long as they are explicitly labeled by name.

What does the try-except block do in Python?

It handles exceptions by attempting a block of code and catching errors, preventing crashes.

Why put risky code inside a try block?

To handle potential errors safely without crashing the program.

How does input() function behave in Python?

It always returns the user's input as a string.

What is the consequence of dividing by a string in Python?

Triggers a TypeError, as division requires numeric types.

What is the final output when slicing a tuple?

The result depends on the indices specified in the slice operation.

How to increment a variable in function without returning anything?

Use global statements to modify it from within the function.

Why are tuples immutable in Python?

Once created, their contents cannot be changed or modified.

What exception type is raised if you try to modify a tuple?

TypeError.