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Programming for Engineers -Summer25
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Consider the following list:
values = [12, 4, 8, 16, 24]Which statement displays the last element in the list?
grades = {"Alice": 85, "Bob": 92, "Charlie": 78}
grades["Diana"] = 88
print(len(grades))
What is the output when this code is executed?
books_read = {"Ali": 3, "Sara": 5, "Omar": 2}
books_read["Omar"] += 1
print(books_read["Omar"])
What is the output when the code is executed?
What code completes this code snippet to swap the first and
last element in the list?
states = ["Alaska", "Hawaii", "Florida", "Maine"]i = 0________________________temp = states[j]states[j] = states[0]states[i] = tempfruit_colors = {"Apple": "Green", "Banana": "Yellow"}
fruit_colors["Apple"] = "Red"
What is the value of fruit_colors after this code is executed?
inventory = {"pen": 10, "notebook": 5, "eraser": 7}
inventory.clear()
print(inventory)
Which dictionary operation is used, and what is the output?
Consider the following code segment:
scores = [5, 3, 7, 9, 1]
top_two = scores[:2]
print(top_two)
homework = ["math", "science", "english"]
homework.append("history")
print(homework[-1])
What is the output when this code is executed?
scores = [10, 8, 7]
total = 0
for s in scores:
total += s
print(total)
What is the output when this code is executed?
Write a Python program that reads a file containing numbers (possibly across multiple lines). The program should:
Convert the values to floats.
Store them in a list.
Compute and print the average (mean) of all numbers in the file.
10 20 30
25 35
15 5 10
A sample code execution is:
Enter the filename: text3.txt
The average is 18.75