Crafting a Dictionary with Comprehension: Squaring Numbers

Dictionary comprehensions offer a concise and elegant way to create dictionaries in Python. This challenge will test your understanding of dictionary comprehensions by asking you to generate a dictionary where keys are numbers from a given list and values are the squares of those numbers. This is a common pattern in data processing and transformation.

Problem Description

You are given a list of numbers. Your task is to create a dictionary using a dictionary comprehension where:

• Keys: The numbers from the input list.
• Values: The square of each corresponding number from the input list.

The dictionary comprehension should iterate through the input list and generate the key-value pairs efficiently.

Key Requirements:

• Use a dictionary comprehension to solve the problem.
• The output must be a dictionary.
• The keys of the dictionary must be the original numbers from the input list.
• The values of the dictionary must be the squares of the corresponding numbers.

Expected Behavior:

The function should take a list of numbers as input and return a dictionary as described above.

Edge Cases to Consider:

• Empty input list: Should return an empty dictionary.
• List containing non-numeric values: Assume the input list will only contain numbers (integers or floats). No error handling is required for non-numeric input.

Examples

Example 1:

Input: [1, 2, 3, 4, 5]
Output: {1: 1, 2: 4, 3: 9, 4: 16, 5: 25}
Explanation: The dictionary comprehension iterates through the list [1, 2, 3, 4, 5]. For each number, it creates a key-value pair where the key is the number itself and the value is the square of the number.

Example 2:

Input: []
Output: {}
Explanation: An empty input list results in an empty dictionary.

Example 3:

Input: [2.5, 3.5, 4.5]
Output: {2.5: 6.25, 3.5: 12.25, 4.5: 20.25}
Explanation: The dictionary comprehension handles floating-point numbers correctly, squaring each value and creating the appropriate key-value pairs.

Constraints

• The input list will contain only numbers (integers or floats).
• The length of the input list can be between 0 and 1000.
• The numbers in the input list can be positive, negative, or zero.
• The solution must be implemented using a dictionary comprehension.

Notes

Think about how you can express the key-value pair generation within the dictionary comprehension in a single, concise line of code. The general form of a dictionary comprehension is {key_expression: value_expression for item in iterable}. Consider what key_expression, value_expression, and iterable should be in this specific scenario.