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Module 3 Quiz

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1. An operator able to check whether two values are equal is coded as:
!= = === ==
2. The value eventually assigned to x is equal to: x = 1 x = x == x
False True 1 0
3. How many stars (*) will the following snippet send to the console? i = 0 while i <= 3 : i += 2 print("*")
zero one three two
4. How many stars (*) will the following snippet send to the console? i = 0 while i <= 5 : i += 1 if i % 2 == 0: break print("*")
two one three zero
5. How many hashes (#) will the following snippet send to the console? for i in range(1): print("#") else: print("#")
two three one zero
6. How many hashes (#) will the following snippet send to the console? var = 0 while var < 6: var += 1 if var % 2 == 0: continue print("#")
two three zero one
7. How many hashes (#) will the following snippet send to the console? var = 1 while var < 10: print("#") var = var << 1
one four eight two
8. What value will be assigned to the x variable? z = 10 y = 0 x = y < z and z > y or y > z and z < y
True False 0 1
9. What is the output of the following snippet? a = 1 b = 0 c = a & b d = a | b e = a ^ b print(c + d + e)
0 1 3 2
10. What is the output of the following snippet? my_list = [3, 1, -2] print(my_list[my_list[-1]])
1 -2 3 -1
11. What is the output of the following snippet? my_list = [1, 2, 3, 4] print(my_list[-3:-2])
[] [2, 3, 4] [2] [2, 3]
12. The second assignment: vals = [0, 1, 2] vals[0], vals[2] = vals[2], vals[0]
doesn't change the list shortens the list extends the list reverses the list
13. After execution of the following snippet, the sum of all vals elements will be equal to: vals = [0, 1, 2] vals.insert(0, 1) del vals[1]
5 4 3 2
14. Take a look at the snippet, and choose the true statements: (Select two answers) nums = [1, 2, 3] vals = nums del vals[1:2]
nums and vals are of the same length nums is longer than vals nums and vals refer to the same list nums is replicated and assigned to vals
15. Which of the following sentences are true? (Select two answers) nums = [1, 2, 3] vals = nums[-1:-2]
nums and vals are of the same length vals is longer than nums nums is longer than vals nums and vals are two different lists
16. What is the output of the following snippet? my_list_1 = [1, 2, 3] my_list_2 = [] for v in my_list_1: my_list_2.insert(0, v) print(my_list_2)
[3, 2, 1] [1, 2, 3] [3, 3, 3] [1, 1, 1]
17. What is the output of the following snippet? my_list = [1, 2, 3] for v in range(len(my_list)): my_list.insert(1, my_list[v]) print(my_list)
[1, 2, 3, 3, 2, 1] [3, 2, 1, 1, 2, 3] [1, 1, 1, 1, 2, 3] [1, 2, 3, 1, 2, 3]
18. How many elements does the my_list list contain? my_list = [i for i in range(-1, 2)]
three one two four
19. What is the output of the following snippet? t = [[3-i for i in range (3)] for j in range (3)] s = 0 for i in range(3): s += t[i][i] print(s)
7 6 4 2
20. What is the output of the following snippet? my_list = [[0, 1, 2, 3] for i in range(2)] print(my_list[2][0])
0 2 1 the snippet will cause a runtime error