Which statement correctly creates a list of the first 5 square numbers in Python?

• A. list(range(1, 6))
• B. [x**2 for x in range(5)]
• C. list([x * x for x in range(1, 6)])
• D. [x*x for x in range(1, 6)]

Answer: (D)

The option that correctly creates a list of the first 5 square numbers in Python is achieved through using a list comprehension, which is a concise way to generate lists based on existing iterables.

In this case, the correct choice utilizes the expression [x*x for x in range(1, 6)]. Here's why this is the correct approach:

• The range(1, 6) function generates a sequence of numbers starting from 1 up to, but not including, 6. Therefore, it produces the numbers 1, 2, 3, 4, and 5.

• The list comprehension iterates over each number x generated by the range and computes x*x, which effectively calculates the square of each number.

• As a result, the comprehension builds a list containing the squares of these numbers: [1, 4, 9, 16, 25], which are indeed the first five square numbers.

This method not only provides a straightforward way to form the list but is also efficient and readable, making it a preferred approach in Python for generating lists from existing data. Other options may produce lists, but either do not compute the correct squares or utilize unnecessary constructs.