Conditionals Debugging#

Section Title: Conditionals Debugging

  • Each of the following short code contains one or more bugs.     

  • Please identify and correct these bugs.

  • Provide an explanation for your answer.

Question-1#

x = 10

if x<20:
print('A')

Solution

Add appropriate indentation to the last line.

Question-2#

x = 10

if x<20
  print(x+5)

Solution

Colon (:) is missing at the end of the second line.

Question-3#

x = 10

if x<20:
  print(A)

Solution

A is not defined.

Question-4#

is_cheap = true

if is_cheap:
  print('Buy it')

Solution

In the first line, true should be capitalized as True to represent the boolean value.

Question-5#

house_age = 20

if house_age  > 20:
  print('OLD')
elif house_age = 20:
  print('Twenty')
else:
  print('NEW')

Solution

In the condition of the elif part, replace = with == to form a correct boolean expression.

Question-6#

x = 5

if x > 10:
    print('A')
elif:
    print('B')
else:
    print('C')

Solution

The condition (boolean expression) of the elif part is missing.

Question-7#

5 =< 7

Solution

The correct operator for “less than or equal to” is <=, not =<.

Question-8#

x = 10
if x = 10:
    print('It is ten.')

Solution

The condition in the if statement (x = 10) incorrectly uses the assignment operator (=) instead of the correct comparison operator (==).

Question-9#

if x > 5:
    print('It is five.')

Solution

x is not defined.

Question-10#

x = '3'

if x > 2:
    print('It is large.')

Solution

The string x and the integer 2 cannot be compared.

Question-11#

a = 1
if a > 10:
print('Large.')

Solution

There is an indentation error because the print statement is not properly indented inside the if block.

Question-12#

x = 5

if x > 10:
    print('A')
else:
    print('C')
elif x>4:
    print('B')

Solution

The elif statement appears after the else block, which is not allowed in Python. The correct order should be: if, elif, else