Variables Questions and Answers

Python Programming - Variables Questions with Answers help understand how data is stored and referenced in Python. These Python Variables Questions are key for Infosys, Accenture, and SSC exams testing programming basics and naming conventions

Variables

Showing 10 of 24 questions

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11. How do you delete a variable in Python?

remove()
delete()
del
clear()

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12. What is the output of: a = [1, 2, 3]; b = a; b[0] = 5; print(a)?

[1, 2, 3]
[5, 2, 3]
[1, 2, 3, 5]
Error

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13. Which of these is an immutable data type in Python?

list
dict
tuple
set

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14. What does the None keyword represent in Python?

Zero
Empty string
Null value
Boolean false

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15. How do you create a constant variable in Python?

const PI = 3.14
final PI = 3.14
PI = 3.14
Use uppercase naming convention

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16. What is variable shadowing in Python?

When a variable changes type
When local and global variables have same name
When a variable is deleted
When a variable is undefined

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17. Which function converts a string to an integer in Python?

str()
int()
integer()
to_int()

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18. What is the lifetime of a local variable in Python?

Entire program execution
Only during function execution
Until manually deleted
One minute

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19. How do you check if a variable is defined in Python?

try-except block
if variable exists:
Check in locals() or globals()
is_defined() function

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20. What is the difference between = and == in Python?

No difference
= compares, == assigns
= assigns, == compares
Both are assignment operators

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