if statements don't decide on skipping or running the entire code. They only make decisions about a code block.
We use indentation of two spaces to highlight code blocks, like indenting this display statement.
Indentation refers to the space between the code and the code editor's margin.
A code block can be more than a one-liner. All lines with the same indentation belong to the same code block.
>>> if True:
... print("Look at me!")
... print("I am a code block.")
...
Look at me!
I am a code block.