working with lists & Tuples

Question 1

Question: What will be the result of this slicing operation of the names_list?

Code Editor:
names_list = [‘John’, ‘James’, ‘Lily’, ‘Emily’, ‘Nina’]
names_list[::2]

Answer 1

[‘John’, ‘Lily’, ‘Nina’]

Question 2

Which of the following lines of code will print this string in reverse i.e. print out “olleH”

Answer 2

some_str[::-1]

Question 3

some_list = [‘a’, ‘b’, ‘c’, ‘d’, ‘e’, ‘f’]
How do you slice this list to access the elements ‘c’, ‘d’?

Answer 3

some_list[2:4]

Question 4

If you want to count the number of times the name “John” appears in the names_list what function would you invoke?

Answer 4

names_list.count(“John”)

Question 5

Question: What is the result of executing this code?

Code Editor:
some_string = “Python”
a, b, c, d = some_string

Answer 5

This is an error, “too many values to unpack”

Question 6

Question: If you wanted to insert an element at index 2 in a particular list named names_list what is the function that you would invoke?

Answer 6

names_list.insert(2, “John”)

Question 7

Question: If you wanted to sort the elements in the list names_list in alphabetical order which of the following statements in Python are valid?

names_list.alphabetical_sort()
names_list = sorted(names_list)
names_list = sort_alpha(names_list)
names_list.sort()

Answer 7

names_list = sorted(names_list)
names_list.sort()

Question 8

Question: What is the result of executing this code?

Code Editor:
city = ‘Los Angeles’
city.find(‘x’)

Answer 8

-1

Question 9

Question: Which of the following are valid complex data types in Python?

Answer 9

Sets, lists, dictionaries