Variables Debugging#

Section Title: Variables 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#

state = 'NY'
int(state)

Solution

string state can not be converted to an integer.

Question-2#

991_number = 'emergency'

Solution

variable names can not start with a digit

Question-3#

float('HI')

Solution

string HI can not be converted to a float.

Question-4#

A = 3
print(a + 5)

Solution

a is not defined because capital A is 3

Question-5#

True = 5
print(True)

Solution

Keywords can not be used as a variable names. True is a keyword.

Question-6#

print(int('5.0'))

Solution

5.0 is not an integer

Question-7#

age = 25
print('I am'+age+'years old.')

Solution

  • I am is a string and age is an integer.

  • ‘+’ can not be used to concatenate numbers and strings

Question-8#

print = 25
print('Hello')

Solution

  • In the first line, print becomes a variable, and its value is 25, so it loses its function property.

Question-9#

number : 3
print(number)

Solution

In Python, a value is assigned to a variable using the = sign, not :.

Question-10#

number = 3
type[number]

Solution

When calling the type() function, parentheses () should be used instead of square brackets [].

Question-11#

first name = 'Joseph'

Solution

Variable names cannot contain spaces. Instead, you can use an underscore (_) to separate words in variable names.

Question-12#

x = 5, y = 8
print(x+y)

Solution

In multiple assignments, all variable names must be on the left in a comma-separated format, and the corresponding values must be on the right, also separated by commas. Therefore it must be x, y = 5, 8

Question-13#

age = 25
print('I am' age 'years old.')

Solution

You can use a comma to separate a constant string and a variable in a print statement: print(‘I am’, age, ‘years old.’)

Question-14#

age = '25'
birthyear = 2020 - age

Solution

The variable age is a string, and you cannot subtract a string from an integer.

Question-15#

birthyear = 2020 - age

Solution

The variable age is not defined.