NPTEL Programming, Data Structures And Algorithms Using Python (Week 2 Quiz Assignment) 2024

NPTEL Week 2 Quiz

1. One of the following 10 statements generates an error. Which one? (Your answer should be a number between 1 and 10.)

x = [1,"abcd",2,"efgh",[3,4]]  # Statement 1
y = x[0:6]                     # Statement 2
z = x                          # Statement 3
w = y                          # Statement 4
x[1] = x[1][0:3] + 'd'         # Statement 5
y[2] = 4                       # Statement 6
z[1][1:3] = 'yzw'              # Statement 7
z[0] = 0                       # Statement 8
w[4][0] = 1000                 # Statement 9
a = (x[4][1] == 4)             # Statement 10
        

Answer:

2. Consider the following lines of Python code.

x = [423,'b',37,'f']
u = x[1:]
y = u
w = x
u = u[0:]
u[1] = 53
x[2] = 47
        

After these execute, which of the following is correct?

• x[2] == 47, y[1] == 37, w[2] == 47, u[1] == 53
• x[2] == 47, y[1] == 53, w[2] == 47, u[1] == 53
• x[2] == 47, y[1] == 37, w[2] == 37, u[1] == 53
• x[2] == 47, y[1] == 53, w[2] == 37, u[1] == 53

3. What is the value of second after executing the following lines?

first = "tarantula"
second = ""
for i in range(len(first)-1,-1,-1):
  second = first[i] + second
        

Answer:

4. What is the value of list1 after the following lines are executed?

def mystery(l):
  l = l[0:5]
  return()

list1 = [44,71,12,8,23,17,16]
mystery(list1)
        

Answer:

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