Question

Write a Python program that performs the following list operations.

Part A

1. Define a list called numList with elements.

84, 94, 27, 74, 19, 90, 16, 21, 56, 50, 77, 59, 41, 63, 18, 26, 80, 74, 57, 30, 40, 93, 70, 28, 14, 11, 43,65, 91, 83, 22, 53, 74, 44, 73, 55, 47, 74, 81

2. Display the followings:
   • All the numbers in numList
   • The number of elements in numList
   • The smallest number in numList
   • The largest number in numList
   • The sum of all the numbers in numList
   • The number of times 74 appears in numList

Part B

1. Define an empty list called dogNames and display it.

2. Add the following names to dogNames and display all the names in the dogNames list.

Max, Lola, Buddy, Coco, Teddy

3. Display all the names in the dogNames list after each of the following updates.

   • Add the name ‘Benji’ at the end of the dogNames list.
   • Add the name ‘Chico’ at the beginning of the dogNames list (as the first element).
   • Add the name ‘Nala’ after the name ‘Coco’.
   • Add the name ‘Mimi’ before the name ‘Buddy’.

4. Define another list called catNames with elements and display all the names in catNames list.

Kitty, Simba, Shadow, Coco, Pepper, Tiger

5. Create a new list called petNames by joining the dogNames and catName list. Note that in petNames list, all the dog names come before the cat names. Display all the names in petNames list.

6. Display the followings using petNames list.

   • The total number of names in petNames.
   • The number of times the name ‘Coco’ appears in petNames.
   • The index of the pet name ‘Coco’ in petNames.
   • The first pet name that appears in chronological order based on Unicode. Hint:Use min function.
   • The last pet name that appears in chronological order based on Unicode. Hint: Use max function.

7. Delete the last name in petNames list and display both the deleted name and the updated petName list.

8. Delete the first name in petNames list and display both the deleted name and the updated petName list.

9. Delete the first occurrence of the pet name ‘Coco’ using the remove() method and the deleted name and the updated petName list.

10. In a comment, explain the reason to get None as the deleted name in your output for part 9.

Answer 1

Part A:

numList=[84, 94, 27, 74, 19, 90, 16, 21, 56, 50, 77, 59, 41, 63, 18, 26, 80, 74, 57, 30, 40, 93, 70, 28, 14, 11, 43,65, 91, 83, 22, 53, 74, 44, 73, 55, 47, 74, 81]
print("List is:",numList)
print("Numer of elements:",len(numList))
print("smallest number is:",min(numList))
print("Largest number is:",max(numList))
print("Sum of all elements is:",sum(numList))
print("Number of times 74 appears is:",numList.count(74))

Part B:

dogNames=[]
print("List is:",dogNames)
dogNames.append("Max")
dogNames.append("Lola")
dogNames.append("Buddy")
dogNames.append("Coco")
dogNames.append("Teddy")
print("List is:",dogNames)
dogNames.append("Benji")
dogNames.insert(0,"Chico")
dogNames.insert(dogNames.index("Coco")+1,"Nala")
dogNames.insert(dogNames.index("Buddy")-1,"Mimi")
print("List is:",dogNames)

catNames=[]
catNames.append("Kitty")
catNames.append("Simba")
catNames.append("Shadow")
catNames.append("Coco")
catNames.append("Pepper")
catNames.append("Tiger")
print("List is:",catNames)

petNames=[]
petNames=dogNames+catNames
print("List is:",petNames)
print("Total number of Names is:",len(petNames))
print("Number of times Coco appears is :",petNames.count("Coco"))
print("Index of pet Coco is:",petNames.index("Coco"))
print("The first pet that appears in chronological order is:",min(petNames))
print("The last pet that appears in chronological order is:",max(petNames))
print("The deleted pet name is:",petNames[-1])
petNames.remove(petNames[-1])
print("List is:",petNames)
print("The deleted pet name is:",petNames[0])
petNames.remove(petNames[0])
print("List is:",petNames)
petNames.remove("Coco")
print("List is:",petNames)

Screenshots:

The screenshots are attached below for reference.

Please follow them for output.

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