Python Programming

Python has reserved some keywords that you may not use for purposes other than for what they are intended.

For example, you may not name your variable if.

Here is a complete list of Python keywords.

• False
• True
• None
• and
• as
• assert
• async
• await
• break
• class
• continue
• def
• del
• elif
• else
• except
• finally
• for
• from
• global
• if
• import
• in
• is
• lambda
• nonlocal
• not
• or
• pass
• raise
• return
• try
• while
• with
• yield

You can type this to get a list of Python keywords. Don’t worry about what import means for now. We will get to that later.

>>> import keyword 
>>> print (keyword.kwlist)

None

Worth noting is the None keyword. It represents the absence of a value. So it essentially means “nothing”.

This is equivalent to NULL/null in some other programming langauges.

None is also an object. More specifically, it is an instance of the NoneType class.

>>> type(None)