callable() function is used to find the object callable in Python, if it appears callable, true will return (remember that it is still possible that a call fails) and false will return if it is not callable (in this case calling the object will never be succeeded).
callable() function is a part of Python Built-in Functions.
Syntax of callable() Function
The syntax of callable() function in Python is:
1 | callable(object) |
Parameters of callable() Function in Python
x – Where object is any object.
Compatibility
callable() function is available and compatible with both Python 2.x and 3.x.
Return Value of callable() Function in Python
callable() function return boolean values true or false, it return true if the object is callable and return false if the object is not callable. callable() return false if the function fails.
Python callable() Function Example 1
1 2 3 4 5 6 7 8 9 10 11 12 | a = 33 # callable function will return false print(callable(a)) def my_test_function(): print("This is a test") b = my_test_function # but here callable function will return true print(callable(b)) |
Output:
False
True
Python callable() Function Example 2
1 2 3 4 5 6 7 8 9 10 | class MyClass: def __call__(self): print('Some print text') print(callable(MyClass)) InstanceOfMyClass = MyClass() # You cans see the object is callable InstanceOfMyClass() |
Output:
True
Some print text
Python callable() Function Example 3
1 2 3 4 5 | class MySecondClass: def printLine(self): print('Some Text') print(callable(MySecondClass)) |
Output:
True
Python callable() Function Example 4
1 2 3 4 5 6 7 8 9 10 | class MyThirdClass: def printLine(self): print('Some Text') print(callable(MyThirdClass)) InstanceOfMyThirdClass = MyThirdClass() # Raises an Error # 'MyThirdClass' object is not callable InstanceOfMyThirdClass() |
Output:
True
Error: 'MyThirdClass' object is not callable
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