Question

1. which of the following functions are correct? (select all correct responses.)

range(10, 4, -1)
range(1, 2.5, 4.5)
range(2.5, 4.5)
range(0, 3.5)
range(1, 3, 3)

1. given that horse = animal, big has already been executed, which of the following are correct statements? select all correct responses.

reverse(horse)
startswith(horse)
horse.upper()
horse.append(four legs)
range(horse)
horse0.split()
list(horse)

1. the .lower() method changes all the letters in a list to lowercase.

true
false

Explanation:

Step1: Analyze range function in Python

The range() function in Python takes integer - like arguments (start, stop, step where step is optional). The start and stop values must be integers, and step is also an integer (if provided).

• range(10, 4, -1): This is correct as it has integer start (10), stop (4) and step (-1). It will generate a sequence of integers from 10 to 5 (in reverse).
• range(1, 2.5, 4.5): Incorrect because non - integer values (2.5 and 4.5) are used.
• range(2.5, 4.5): Incorrect as it uses non - integer values.
• range(0, 3.5): Incorrect as it uses a non - integer stop value.
• range(1, 3, 3): This is correct as it has integer start (1), stop (3) and step (3), although it will generate an empty sequence since the step is too large to generate values between start and stop.

Step2: Analyze operations on list in Python

Given horse = ['animal', 'big']

• reverse(horse): Incorrect in Python, the correct way is horse.reverse()
• startswith(horse): Incorrect, startswith() is a string method, not for lists.
• horse.upper(): Incorrect, upper() is a string method, not for lists.
• horse.append('four legs'): Correct, append() is a list method to add an element to the end of the list.
• range(horse): Incorrect, range() is used for generating integer sequences, not for lists.
• horse[0].split(): Correct if horse[0] (which is 'animal') is a string, split() is a string method to split a string into a list of substrings.
• list(horse): Incorrect, horse is already a list, this is redundant and not a valid operation in this context.

Step3: Analyze lower() method

The .lower() method is a string method in Python. It changes all the letters in a string to lowercase. It does not work on lists. So the statement "The.lower() method changes all the letters in a list to lowercase" is False.

Answer:

1. range(10, 4, -1), range(1, 3, 3)
2. horse.append('four legs'), horse[0].split()
3. False