Question

A. Demonstrate how to use Python’s list comprehension syntax to produce the list [1, 10, 100, 1000, 10000, 100000].

b. Demonstrate how to use Python’s list comprehension syntax to produce the list [0, 2, 6, 12, 20, 30, 42, 56, 72, 90].\
c. Demonstrate how to use Python’s list comprehension syntax to produce the list [‘a’, ‘b’, ‘c’, ... , ‘z’], but without having to type all 26 such characters literally.

Answer 1

In Python, you can use list comprehension to generate lists based on certain criteria. Examples include creating lists with certain patterns of numbers or letters without explicitly typing them all out.

Step-by-step explanation:

a. To create the list [1, 10, 100, 1000, 10000, 100000] using list comprehension in Python, you can use the following syntax:
[10**n for n in range(6)]

This will raise 10 to the power of n, where n ranges from 0 to 5, resulting in the desired list.

b. To create the list [0, 2, 6, 12, 20, 30, 42, 56, 72, 90], you can use the following list comprehension:
[n*(n-1) for n in range(10)]

Here, n represents each element in the range from 0 to 9, and the expression n*(n-1) calculates the desired values.

c. To create the list ['a', 'b', 'c', ... , 'z'] without typing all 26 characters, you can use the following list comprehension:

This uses the ord function to get the ASCII values of 'a' and 'z', and the chr function to convert the ASCII values back to characters.