← Python

Tuples – Operations

Tuples support indexing, slicing, and unpacking but cannot be modified after creation

What it does: Enum is imported from Python's built-in enum module. .value returns the integer (or string) assigned to the member. An enum gives meaningful names to a fixed set of values — like Color.RED instead of 1. Color.REED would be an error; 'reed' would silently pass through. .name returns the identifier string — useful for display or logging. Enum members support == comparison — identity checks (is) also work. Iterating an Enum class yields each member in definition order. Enum members are instances of the enum class, not plain integers.

Common mistakes: Must import Enum first: from enum import Enum. Duplicate values create aliases, not new members. Use unique values.

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Learning

Duo

What is an enumeration?

A set of named constantsA type of list

Matches

❌ from Enum import enum

↓

Error: Incorrect import — use from enum import Enum

Applying

Meanings

Term

Enum

Meaning

A class for creating sets of named constants.

Practice

from enum import Enum

Testing

Gaps

from enum import

Check Answer

Spots

1class Color(Enum):

2 RED = 1

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Quick Questions

1. What is an enumeration?

A. A set of named constants ✓

B. A type of list

An enum gives meaningful names to a fixed set of values — like Color.RED instead of 1

2. Why use enums instead of strings?

A. They're faster

B. Prevents typos and invalid values ✓

Color.REED would be an error; 'reed' would silently pass through

3. Color.RED.value returns?

A. The value assigned to RED (e.g., 1) ✓

B. The string 'RED'

.value gives the underlying number or string — .name gives the member's identifier

4. Color.RED.name returns?

A. 1

B. 'RED' (the name as a string) ✓

.name returns the identifier string — useful for display or logging

5. Can enum members be compared?

A. Yes Color.RED == Color.RED is True ✓

B. No

Enum members support == comparison — identity checks (is) also work

Match the Pairs

from Enum import enum → Error: Incorrect import — use from enum import Enum

Color(RED) → Error: Access members with Color.RED

from enum import Enum → Valid: Correct import for Enum class

Color.RED.value → Ok: Access the numeric value of an enum member

list(range(3)) → Output: [0, 1, 2]

type(True) → Output: <class 'bool'>

Key Term

Enum

A class for creating sets of named constants.~~Member

Fill in the Blanks

1. from enum import Enum class Color(Enum): RED = 1

2. class Color(Enum): RED = 1

3. print(Color.RED.value)

4. print(Color.RED.name)

5. for c in Color: print(c)

Spot the Error

Question 1

A class Color(Enum):

B RED = 1

Line A — Must import Enum first: from enum import Enum

Question 2

A from enum import Enum

C class Color(Enum):

D RED = 1

E GREEN = 1

Line E — Duplicate values create aliases, not new members. Use unique values.

Question 3

A from enum import Enum

C class Color(Enum):

D RED = 1

F Color.RED = 2

Line F — Cannot reassign enum members they are immutable

Question 4

A from enum import Enum

C class Color(Enum):

D red = 1

Line D — Convention: enum member names should be UPPER_CASE

Question 5

A from enum import Enum

C class Color(Enum):

D RED = 1

F if color == 'RED':

Line F — Compare with Color.RED, not the string 'RED'

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