Index
- built_in_functions
- Python abs()
- Python all()
- Python any()
- Python ascii()
- Python bin()
- Python bool()
- Python bytearray()
- Python bytes()
- Python callable()
- Python chr()
- Python classmethod()
- Python compile()
- Python complex()
- Python delattr()
- Python dict()
- Python dir()
- Python divmod()
- Python enumerate()
- Python eval()
- Python exec()
- Python filter()
- Python float()
- Python format()
- Python frozenset()
- Python getattr()
- Python globals()
- Python hasattr()
- Python hash()
- Python help()
- Python hex()
- Python id()
- Python input()
- Python int()
- Python isinstance()
- Python issubclass()
- Python iter()
- Python len()
- Python list()
- Python locals()
- Python map()
- Python max()
- Python memoryview()
- Python min()
- Python next()
- Python object()
- Python oct()
- Python open()
- Python ord()
- Python pow()
- Python print()
- Python property()
- Python range()
- Python repr()
- Python reversed()
- Python round()
- Python set()
- Python setattr()
- Python slice()
- Python sorted()
- Python staticmethod()
- Python str()
- Python sum()
- Python super()
- Python tuple() Function
- Python type()
- Python vars()
- Python zip()
- Python __import__()
- python1compute
- Python Program to Find Hash of File
- Python Program to Find the Size (Resolution) of a Image
- Python Program to Merge Mails
- Python Program to Count the Number of Each Vowel - Source Code: Using a list and a dictionary comprehension
- Python Program to Count the Number of Each Vowel - Source Code: Using Dictionary
- Python Program to Illustrate Different Set Operations
- Python Program to Sort Words in Alphabetic Order
- Python Program to Remove Punctuations From a String
- Python Program to Multiply Two Matrices - Matrix Multiplication Using Nested List Comprehension
- Python Program to Multiply Two Matrices - Source Code: Matrix Multiplication using Nested Loop
- Python Program to Transpose a Matrix - Matrix Transpose using Nested List Comprehension
- Python Program to Transpose a Matrix - Matrix Transpose using Nested Loop
- Python Program to Add Two Matrices - Source Code: Matrix Addition using Nested List Comprehension
- Python Program to Check Whether a String is Palindrome or Not
- Python Program to Add Two Matrices - Source code: Matrix Addition using Nested Loop
- Python Program to Convert Decimal to Binary Using Recursion
- Python Program to Find Factorial of Number Using Recursion
- Python Program to Find Sum of Natural Numbers Using Recursion
- Python Program to Display Fibonacci Sequence Using Recursion
- Python Program to Display Calendar
- Python Program to Shuffle Deck of Cards
- Python Program to Make a Simple Calculator
- Python Program to Find Factors of Number
- Python Program to Find LCM - Without using GCD function
- Python Program to Find HCF or GCD - Source Code: Using Euclidean Algorithm
- Python Program to Find LCM - Source Code: Using GCD function
- Python Program to Find HCF or GCD - Source Code: Using Loops
- Python Program to Find ASCII Value of Character
- Python Program to Convert Decimal to Binary, Octal and Hexadecimal
- Python Program to Find Numbers Divisible by Another Number
- Python Program To Display Powers of 2 Using Anonymous Function
- Python Program to Find the Sum of Natural Numbers
- Python Program to Find Armstrong Number in an Interval
- Python Program to Check Armstrong Number - Source Code: Check Armstrong number of n digits
- Python Program to Check Armstrong Number - Source Code: Check Armstrong number (for 3 digits)
- Python Program to Print the Fibonacci sequence
- Python Program to Display the multiplication Table
- Python Program to Find the Factorial of a Number
- Python Program to Print all Prime Numbers in an Interval
- Python Program to Find the Largest Among Three Numbers
- Python Program to Check Prime Number
- Python Program to Check Leap Year
- Python Program to Check if a Number is Odd or Even
- Python Program to Check if a Number is Positive, Negative or 0 Source Code: Using Nested if
- Python Program to Check if a Number is Positive, Negative or 0 Source Code: Using if...elif...else
- Python Program to Convert Celsius To Fahrenheit
- Python Program to Generate a Random Number
- Python Program to Convert Kilometers to Miles
- Python Program to Swap Two Variables Source Code: Without Using Temporary Variable
- Python Program to Swap Two Variables Source Code: Using temporary variable
- Python Program to Solve Quadratic Equation
- Python Program to Calculate the Area of a Triangle
- Python Program to Find the Square Root Source code: For real or complex numbers using cmath module
- Python Program to Find the Square Root Source Code: For positive numbers using exponent **
- Python Program to Add Two Numbers By One Line
- Python Program to Add Two Numbers Source Code: Add Two Numbers Provided by The User
- Python Program to Add Two Numbers
- Python Program to Print Hello world!
- python2based
Description isinstance()
Python isinstance()
The isinstance() function checks if the object (first argument) is an instance or subclass of classinfo class (second argument).
The syntax of isinstance() is:
isinstance(object, classinfo)
isinstance() Parameters
The isinstance() takes two parameters:
• object -
object
to be checked• classinfo - class, type, or tuple of classes and types
Return Value from isinstance()
The isinstance() returns:
•
True
if the object is an instance or subclass of a class, or any element of the tuple•
False
otherwiseIf classinfo is not a type or tuple of types, a
TypeError
exception is raised.Example 1: How isinstance() works?
----------------------------------------------------------------------------------------------------------
class Foo:
a = 5
fooInstance = Foo()
print(isinstance(fooInstance, Foo))
print(isinstance(fooInstance, (list, tuple)))
print(isinstance(fooInstance, (list, tuple, Foo)))
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When you run the program, the output will be:
True
False
True
Example 2: Working of isinstance() with Native Types
--------------------------------------------------------------------------------------------------------------
numbers = [1, 2, 3]
result = isinstance(numbers, list)
print(numbers,'instance of list?', result)
result = isinstance(numbers, dict)
print(numbers,'instance of dict?', result)
result = isinstance(numbers, (dict, list))
print(numbers,'instance of dict or list?', result)
number = 5
result = isinstance(number, list)
print(number,'instance of list?', result)
result = isinstance(number, int)
print(number,'instance of int?', result)
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When you run the program, the output will be:
[1, 2, 3] instance of list? True
[1, 2, 3] instance of dict? False
[1, 2, 3] instance of dict or list? True
5 instance of list? False
5 instance of int? True