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Python Keywords

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Python Keywords

Keywords are reserved words. Python already uses them, so you cannot use them as variable names. if, else, for, while, def, class, return, import, try, except, True, False, None — these are the everyday ones.

True, False, None start with a capital letter. Writing true is a NameError. class = 5 is illegal. int = 5 is allowed but ugly — don’t shadow built-in names. help("keywords") lists them if you forget.

Viva — “keyword means reserved”. Then list six. Don’t invent new keywords.

Python Keywords — output — True is a keyword. True/False/None start with a capital letter.

Exam tip

Define keyword + six everyday examples.

Example

# Keywords
ok = True
if ok:
    print("True is a keyword")

Python Keywords — output: True is a keyword. True/False/None start with a capital letter.

Short notes

DefReserved words. Not variable names.
RuleTrue False None are capital.
Rememberif / def / class / return.
TrapUsing class as a variable.

Python · Theory

Python Keywords

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Theory

9/268

Python Keywords

Viva — “keyword means reserved”. Then list six. Don’t invent new keywords.

Python Keywords — output — True is a keyword. True/False/None start with a capital letter.

Exam tip

Define keyword + six everyday examples.

Example

# Keywords
ok = True
if ok:
    print("True is a keyword")

Python Keywords — output: True is a keyword. True/False/None start with a capital letter.

Short notes

DefReserved words. Not variable names.
RuleTrue False None are capital.
Rememberif / def / class / return.
TrapUsing class as a variable.

Python Keywords

Example

Short notes

Questions

Python Keywords

Example

Short notes

Questions