Identifiers and Reserved Words

Question 1

What is a name in a Python program called?

Answer 1

Identifier

Question 2

What types of names can be considered identifiers in Python?

Answer 2

Class name, function name, module name, variable name

Question 3

What characters are allowed in Python identifiers?

Answer 3

Alphabet symbols, digits, underscore

Question 4

What happens if an invalid character is used in an identifier?

Answer 4

Syntax error

Question 5

Is it valid to start an identifier with a digit?

Answer 5

No

Question 6

Are identifiers in Python case sensitive?

Answer 6

Yes

Question 7

What does it indicate if an identifier starts with an underscore (_)?

Answer 7

It is private

Question 8

Can reserved words be used as identifiers in Python?

Answer 8

No

Question 9

What is the maximum length for Python identifiers?

Answer 9

No length limit, but lengthy identifiers are not recommended

Question 10

Which of the following is a valid Python identifier? ‘total123’, ‘123total’, ‘ca$h’, ‘abc_abc’

Answer 10

total123, abc_abc

Question 11

How many reserved words are available in Python?

Answer 11

33

Question 12

List three examples of reserved words in Python.

Answer 12

• True
• False
• None

Question 13

What are reserved words in Python?

Answer 13

Words reserved to represent some meaning or functionality

Question 14

What do all reserved words in Python contain?

Answer 14

Only alphabet symbols

Question 15

Which reserved words in Python contain uppercase letters?

Answer 15

• True
• False
• None

Question 16

Is ‘a = true’ a valid statement in Python?

Answer 16

No

Question 17

Is ‘a = True’ a valid statement in Python?

Answer 17

Yes

Question 18

What does it indicate if an identifier starts with two underscores?

Answer 18

It indicates a strongly private identifier

Question 19

What are identifiers that start and end with two underscores called?

Answer 19

Language defined special names or magic methods