LINUS LEARN - Online Courses and News

1. Create a tuple that contains 0, 0, 1, 0, 1, and 1
2. Count the number of 0 using a method.
3. Find the index of the first 1 using a method.
4. Delete the tuple.
Tips: To delete a tuple, you could use del followed by the tuple name.

Right Answer:

# Step 1 binary_tuple = (0, 0, 1, 0, 1, 1) # Step 2 count_zeros = binary_tuple.count(0) print(count_zeros) # Output: 3 # Step 3 index_of_first_one = binary_tuple.index(1) print(index_of_first_one) # Output: 2 # Step 4 del binary_tuple # Deleting the tuple

1. Create a list named floats that contains 1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7 and 8.8
2. Use slicing to get the elements 2.2, 3.3 and 4.4 in one operation.
3. Use slicing to get the elements from 3.3 to the end of the list.
4. Use slicing to get the elements from the start of the list to 5.5 included.
5. Use slicing to reverse the list.

Right Answer:

# Step 1 floats = [1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8] # Step 2 print(floats[1:4]) # Output: [2.2, 3.3, 4.4] # Step 3 print(floats[2:]) # Output: [3.3, 4.4, 5.5, 6.6, 7.7, 8.8] # Step 4 print(floats[:5]) # Output: [1.1, 2.2, 3.3, 4.4, 5.5] # Step 5 print(floats[::-1]) # Output: [8.8, 7.7, 6.6, 5.5, 4.4, 3.3, 2.2, 1.1]

1. Create a list named integers that contains 0, 1 and 3.
2. Add the number 4 to the end of the list using two different methods.
3. Add the number 2 in the list at the correct index to get a sequence.
4. Print the list, it should display 0, 1, 2, 3, 4.
5. Create a new list that contains 5, 6, 7 and 8.
6. Add this new list at the end of the integers list.
7. Remove the number 0 from the list.

Right Answer:

# Step 1 integers = [0, 1, 3] # Step 2 integers.append(4) # Method 1: Using append() integers += [4] # Method 2: Using += operator # Step 3 integers.insert(2, 2) # Insert 2 at the correct index to create a sequence # Step 4 print(integers) # Output: [0, 1, 2, 3, 4] # Step 5 new_list = [5, 6, 7, 8] # Step 6 integers.extend(new_list) # Adding the new list at the end of the integers list # Step 7 integers.remove(0) # Removing the number 0 from the list print(integers) # Output: [1, 2, 3, 4, 5, 6, 7, 8]

1. Create a list named matrix that contains:
[1, 2, 3],
[4, 5, 6],
[7, 8, 9]
2. Print the element 8.
3. Print the second row of the matrix, i.e. 4, 5 and 6.
4. Print the third column of the matrix, i.e. 3, 6 and 9.
5. Print the diagonal of the matrix, i.e., 1, 5 and 9.

Right Answer:

# Step 1 matrix = [ [1, 2, 3], [4, 5, 6], [7, 8, 9] ] # Step 2 print(matrix[2][1]) # Output: 8 # Step 3 print(matrix[1]) # Output: [4, 5, 6] # Step 4 third_column = [row[2] for row in matrix] print(third_column) # Output: [3, 6, 9] # Step 5 diagonal = [matrix[i][i] for i in range(len(matrix))] print(diagonal) # Output: [1, 5, 9]

You can’t use any loop for this exercise.
1. Create a list named numbers that contains 3, 4, 5, 1 and 2.
2. Ask the user to input a number.
3. Compare the user's number to the maximum of the list.
4. Print whether it is higher or lower than the maximum of the list.
5. Do the same using another method.

Right Answer:

# Step 1 numbers = [3, 4, 5, 1, 2] # Step 2 user_number = int(input("Enter a number: ")) # Step 3 if user_number > max(numbers): print("Your number is higher than the maximum of the list.") else: print("Your number is lower than or equal to the maximum of the list.") # Step 5 - Alternative method maximum = sorted(numbers)[-1] # Sorting to find the max value if user_number > maximum: print("Your number is higher than the maximum of the list.") else: print("Your number is lower than or equal to the maximum of the list.")

1. Create a list named fishes that contains “catfish”, “perch”, “cod” and “carp”
2. Show the last element of the list using two different ways.
3. Change the second element of the list by another fish name.
4. Print the modified list.

Right Answer:

# Step 1 fishes = ["catfish", "perch", "cod", "carp"] # Step 2 print(fishes[-1]) # Output: carp (using negative index) print(fishes[3]) # Output: carp (using positive index) # Step 3 fishes[1] = "salmon" # Changing the second element to "salmon" # Step 4 print(fishes) # Output: ['catfish', 'salmon', 'cod', 'carp']

1. Create a list named first_list that contains 0, 1, 2, 3 and 4.
2. Create a new list named copy_list by doing copy_list = first_list.
3. Modify the last element of copy_list.
4. Print first_list.
5. What happened ?
6. Find a way to correctly copy the first_list.

Right Answer:

# Step 1 first_list = [0, 1, 2, 3, 4] # Step 2 copy_list = first_list # This is an assignment, not a true copy # Step 3 copy_list[-1] = 9 # Modify the last element of copy_list # Step 4 print(first_list) # Output: [0, 1, 2, 3, 9] # Step 5 - Explanation # Both `first_list` and `copy_list` refer to the same list in memory, so changes to one affect the other. # Step 6 - Correct way to copy the list copy_list = first_list.copy() # Use the .copy() method for a true copy # Verifying by modifying copy_list again copy_list[-1] = 8 print(first_list) # Output: [0, 1, 2, 3, 9] (no change in first_list) print(copy_list) # Output: [0, 1, 2, 3, 8] (change only in copy_list)

1. Create a list named sports that contains "Football", "Basketball", "Swimming" and
"Tennis".
2. Ask the user for their favorite sport.
3. Print "We love that too!" if the user's favorite sport is in the list.

Right Answer:

# Step 1 sports = ["Football", "Basketball", "Swimming", "Tennis"] # Step 2 favorite_sport = input("Enter your favorite sport: ") # Step 3 if favorite_sport in sports: print("We love that too!") else: print("That's a great sport, but not on our list.")

1. Ask the user to provide three numerical inputs.
2. Create a tuple out of them.
3. If the sum of the first and second elements of the tuple is greater than the third, print
the tuple in reverse.
4. Otherwise, print the tuple normally.

Right Answer:

# Step 1 num1 = float(input("Enter first number: ")) num2 = float(input("Enter second number: ")) num3 = float(input("Enter third number: ")) # Step 2 num_tuple = (num1, num2, num3) # Step 3 and Step 4 if num1 + num2 > num3: print(num_tuple[::-1]) # Print the tuple in reverse else: print(num_tuple) # Print the tuple normally

1. Given a list named colors that contains "red", "blue", "green", "yellow" and "pink"
2. Print the second and fourth items from the list.
3. Given the tuple named grades that contains "A", "B", "C", "D" and "F"
4. Print the first and last items from the tuple.

Right Answer:

# Step 1 colors = ["red", "blue", "green", "yellow", "pink"] # Step 2 print(colors[1]) # Output: blue print(colors[3]) # Output: yellow # Step 3 grades = ("A", "B", "C", "D", "F") # Step 4 print(grades[0]) # Output: A print(grades[-1]) # Output: F

LINUS LEARNING

Our Office

Email Us

Call Us

LINUS COURSES

QUESTIONS

Get In Touch

Our Courses

Newsletter