Id() in Python
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Lecture 12:- Id() in Python
In Python,
id()is a built-in function that returns the unique identity (memory address) of an object. The identity of an object is a unique integer value that remains constant during its lifetime. It serves as an identifier for the object, allowing you to distinguish one object from another.The syntax of the
id()function is as follows:pythonCopy code
id(object)Here,
objectis the object whose identity you want to retrieve.Example:
pythonCopy code
x = 42 y = "Hello" z = [1, 2, 3] print(id(x)) # Output: A unique integer value representing the memory address of x print(id(y)) # Output: A unique integer value representing the memory address of y print(id(z)) # Output: A unique integer value representing the memory address of zNote that for immutable objects (e.g., integers, strings), the
id()will remain the same throughout the object's lifetime because these objects cannot be modified in place. However, for mutable objects (e.g., lists, dictionaries), theid()can change if the object is modified, as the Python interpreter may decide to move the object to a different memory location to accommodate its new size.The
id()function is mostly used for debugging or understanding object behavior, and it is not recommended to use it for comparison or logic operations in regular programming. For equality comparison, use the==operator instead of comparingid()values.
- 1. Background Part 1 (IO Devices, CPU and Memory) In Python
- 2. Background Part 2 (Computer Organization & Operating System) In Python
- 3. Why Do We Need Programming Languages in Python
- 4. Python Introduction in Python
- 5. Python Standard and Implementations in Python
- 6. How Python Programs are Executed
- 7. Python Programming Terminology
- 8. Python Installation and First Program
- 9. Comments in Python
- 1. Arithmetic Operators in Python
- 2. Logical Operators in Python
- 3. Identity Comparison Operators in Python
- 4. Membership Test Operators in Python
- 5. Bitwise Operators in Python Part 1
- 6. Bitwise Operators In Python Part 2
- 7. Arithmetic Progression nth Term in Python
- 8. Geometric Progression nth Term in Python
- 9. Sum Of Natural numbers In Python
- 10. Find Last Digit In Python
- 11. Day Before N Days In Python
- 1. Loops In Python
- 2. While Loops In Python
- 3. range() In Python
- 4. For Loop In Python
- 5. Table Of A Number In Python
- 6. Break In Python
- 7. Continue In Python
- 8. Nested Loop In Python
- 9. Square Pattern In Python
- 10. Printing Triangle Pattern In Python
- 11. Inverted Triangle In Python
- 12. Pyramid Pattern In Python
- 13. Count Digits In Python
- 14. Factorial In Python
- 15. GCD In Python
- 16. LCM In Python
- 17. Fibonacci Numbers In Python
- 18. Check For Prime In Python
- 19. All Divisors In Python
- 20. Optimizations Of All Divisors And Prime Python
- 1. Strings In Python
- 2. Escape Sequences And Raw Strings Python
- 3. Formatted String In Python
- 4. String Operations Part(1) In Python
- 5. String Operations Part(2) In Python
- 6. String Comparison in Python
- 7. Pattern Searching In Python
- 8. Check For Palindrome In Python
- 9. Reverse A String In Python
- 10. Decimal to Binary In Python
- 11. Binary to Decimal Conversion In Python
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