Python: issubclass() function

Last update on August 19 2022 21:50:45 (UTC/GMT +8 hours)

issubclass() function

The issubclass() function returns true if the specified object is a subclass of the specified object, otherwise false. A class is considered a subclass of itself.

Version:

(Python 3.2.5)

Syntax:

issubclass(class, classinfo)

Parameter:

Name	Description	Required / Optional
class	An object to be checked.	Required
classinfo	classinfo may be a tuple of class objects, in which case every entry in classinfo will be checked. In any other case, a TypeError exception is raised.	Required

Example: Python issubclass() function

class Square:
  def __init__(SquareType):
    print('Square is a ', SquareType)

class Rectangle(Square):
  def __init__(self):
    Square.__init__('Rectangle')
    
print(issubclass(Rectangle, Square))
print(issubclass(Rectangle, list))
print(issubclass(Rectangle, (list, Square)))
print(issubclass(Square, (list, Square)))

Output:

True
False
True
True

Python Code Editor:

Previous: isinstance()
Next: iter()

Test your Python skills with w3resource's quiz