Write python expressions corresponding to these statements:

2.22 write an expression involving string s containing the last and first name of a person— separated by a blank space—that evaluates to the person’s initials. if the string contained my first and last name, the expression would evaluate to 'lp'.

2.23 the range of a list of numbers is the largest difference between any two numbers in the list. write a python expression that computes the range of a list of numbers lst. if the list lst is, say, [3, 7, -2, 12], the expression should evaluate to 14 (the difference between 12 and -2).

2.24 write the relevant python expression or statement, involving a list of numbers lst and using list operators and methods for these specifications:

(a) an expression that evaluates to the index of the middle element of lst

(b) an expression that evaluates to the middle element of lst

(c) a statement that sorts the list lst in descending order

(d) a statement that removes the first number of list lst and puts it at the end

The code with explanatory comments are given in Python below

Explanation:

#2.22

s = "Lionel Pogba"   #string s with names having LP as initials

names = s.split()  #splits the string into individual characters

initial = ""  #we are initialising the initials as an empty string

for i in names:

   initial += i[0]  #making the initials of the string

print(initial)

#2.23

l = [3, 7, -2, 12]  

range = (max(l) - min(l))  #declare and initialise variable range for the range

print(range) #output of the range

#2.24

l1 = [3, 7, 17, -2, 12]

#(a)

midIndex = int(len(l1)/2)  #evaluates half the length of the list

#which corresponds to the middle index of the list

print(midIndex)

#(b)

print(l1[midIndex])  #assigns the value of the middle index of the list

#corresponding to the middle element

#(c)

l1.sort(reverse=True) #reverses the elements of the list to descending order

print(l1)

#(d)

firstValue = l1[0]  #firstValue variable representing the first element

l1 = l1[1:] + [firstValue] #assigning the location to the last position

print(l1)

hope it

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step-by-step explanation:

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explanation: