Practical – 154 : Construct and analyze code segments that  include  List comprehensions, tuple ,set and dictionary comprehensions

Certainly! Let’s break this down into constructing and analyzing Python code segments that use:

• ✅ List Comprehension
• ✅ Tuple Comprehension (via generator)
• ✅ Set Comprehension
• ✅ Dictionary Comprehension

Each comprehension is a compact way to create collections with a single readable expression.

✅ 1. List Comprehension

🔹 Example:

squares = [x**2 for x in range(1, 6)]

print(“Squares List:”, squares)

🔍 Analysis:

• Creates a list of squares from 1 to 5.
• Equivalent to:
• squares = []
• for x in range(1, 6):
•     squares.append(x**2)

✅ 2. Tuple Comprehension (Using Generator Expression)

Python does not have direct tuple comprehension, but generator expressions inside tuple() simulate it.

🔹 Example:

squares_tuple = tuple(x**2 for x in range(1, 6))

print(“Squares Tuple:”, squares_tuple)

🔍 Analysis:

• Generator expression passed to tuple() converts output into a tuple.
• Memory-efficient for large sequences.

✅ 3. Set Comprehension

🔹 Example:

unique_squares = {x**2 for x in [1, 2, 2, 3, 3, 4]}

print(“Unique Squares Set:”, unique_squares)

🔍 Analysis:

• Duplicates are automatically removed.
• Results in {1, 4, 9, 16}.

✅ 4. Dictionary Comprehension

🔹 Example:

square_dict = {x: x**2 for x in range(1, 6)}

print(“Square Dictionary:”, square_dict)

🔍 Analysis:

• Keys are numbers 1 to 5, values are their squares.
• Output: {1: 1, 2: 4, 3: 9, 4: 16, 5: 25}

✅ Bonus: Conditional Comprehensions

🔹 List with if condition:

even_squares = [x**2 for x in range(1, 11) if x % 2 == 0]

print(“Even Squares:”, even_squares)

🔹 Dictionary with condition:

even_dict = {x: x**2 for x in range(1, 11) if x % 2 == 0}

print(“Even Square Dict:”, even_dict)

🔚 Summary Table:

Type	Syntax Example	Use Case
List	[x for x in range(5)]	Create or filter list
Tuple	tuple(x for x in range(5))	Memory-efficient tuples
Set	{x for x in [1,2,2,3]}	Unique values automatically
Dictionary	{x: x**2 for x in range(5)}	Key-value mappings