[Solved] You have a list of software phases: ['requirements', 'design', 'implementation',... How would you create a dictionary mapping each phase to its order number starting from 1 using a comprehension? | Software Engineering

Software Engineering - Fundamentals

You have a list of software phases: ['requirements', 'design', 'implementation', 'testing', 'deployment']. How would you create a dictionary mapping each phase to its order number starting from 1 using a comprehension?

A{i: phase for i, phase in enumerate(phases)}

B{phase: i for i, phase in enumerate(phases, 1)}

C{i+1: phase for i, phase in enumerate(phases)}

D{phase: i+1 for phase, i in enumerate(phases)}

Step-by-Step Solution

Solution:

Step 1: Understand enumerate usage
enumerate(phases, 1) gives pairs (1, 'requirements'), (2, 'design'), etc.
Step 2: Match dictionary comprehension syntax
Correct syntax is {phase: i for i, phase in enumerate(phases, 1)} to map phase to order.
Final Answer:
{phase: i for i, phase in enumerate(phases, 1)} -> Option B
Quick Check:
Correct dict comprehension maps phase to order [OK]

Quick Trick: Use enumerate with start=1 for ordered mapping [OK]

Common Mistakes:

Swapping keys and values
Starting enumerate at 0
Wrong variable order in comprehension

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More Software Engineering Quizzes

How would you create a dictionary mapping each phase to its order number starting from 1 using a comprehension?

Step 1: Understand enumerate usage

Step 2: Match dictionary comprehension syntax

Final Answer:

Quick Check:

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