Python Coding Challange - Question with Answer (01020825)

 

Step-by-step Explanation

✅ Part 1: Dictionary Comprehension

x = {i: i**2 for i in range(3)}

• This is a dictionary comprehension.

• range(3) produces: 0, 1, 2

• For each i, it maps:

  • Key → i

  • Value → i**2 (i squared)

So the dictionary x becomes:

x = {
  0: 0**2, # 0
  1: 1**2, # 1
  2: 2**2 # 4
}

Which results in:

x = {0: 0, 1: 1, 2: 4}

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✅ Part 2: Accessing a Key

print(x[2])

• x[2] retrieves the value associated with key 2, which is 4.

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✅ Final Output

4

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