Python Block Structure and Indentation - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of indentation in Python?

Indentation in Python shows which lines of code belong together in a block. It helps the computer understand the structure and flow of the program.

beginner

How many spaces are recommended for each indentation level in Python?

The recommended number of spaces for each indentation level is 4 spaces. This keeps code clear and consistent.

intermediate

What happens if you mix tabs and spaces in Python indentation?

Mixing tabs and spaces can cause errors or unexpected behavior because Python treats them differently. It's best to use only spaces or only tabs consistently.

beginner

Which Python keywords introduce a new block that requires indentation?

Keywords like if, for, while, def, and class start new blocks that must be indented.

beginner

What error do you get if indentation is incorrect in Python?

Python raises an IndentationError when the indentation is wrong or inconsistent.

What does indentation in Python indicate?

A Which lines belong to the same block

B The color of the code

C The speed of the program

D The size of variables

Indentation shows which lines of code are grouped together in a block.

Which of these keywords starts a new indented block in Python?

A if

B return

C print

D import

The 'if' keyword starts a new block that requires indentation.

What is the recommended number of spaces for one indentation level?

A 3 spaces

B 4 spaces

C 2 spaces

D 1 space

Python style guides recommend 4 spaces per indentation level.

What error occurs if indentation is inconsistent?

A SyntaxError

B TypeError

C IndentationError

D NameError

Python raises an IndentationError when indentation is wrong.

Why should you avoid mixing tabs and spaces?

A It makes code run faster

B It improves readability

C It changes variable names

D It causes errors or confusion

Mixing tabs and spaces can cause errors because Python treats them differently.

Explain why indentation is important in Python and how it affects the program flow.

Think about how Python knows which lines belong together.

Describe the best practices for indentation in Python.

Consider style and avoiding errors.