如何验证给定的输入是否是 Python 中的对象？

Question

I am creating a validation function that would verify if the inputs are objects.

I have no idea how to approach this. So, any help or suggestion would be highly beneficial.

Any search for object validation leads me to form validation in Django and that's not what I am looking for.

Answer 1

Assuming that you meant to validate objects of user created classes(because otherwise everything in python is an object), tried in Python3:

import inspect
def is_object(x):
  if isinstance(x, (int, str, float, complex)):
    print("Built-in class's object")
    return False
  elif hasattr(x, '__class__') and inspect.isclass(x) is False:
    print("Custom class's object")
    return True
  elif inspect.isclass(x):
    print("Class")
    return False
  else:
    return False

Answer 2

You can use type() to validate given input.

>>> a= 10
>>> type(a)
<class 'int'>

>>> class custom:
        pass
>>> a=custom()
>>> type(a)
<class '__main__.custom'>

>>>a="hello"
>>> type(a)
<class 'str'>

>>>a=[]
>>>type(a)
<class 'list'>

---

or else you can use isinstance() method.

>>>a=[]
>>>isinstance(a,list)
True

>>> a="hello"
>>>isinstance(a,str)
True

>>>a=122
>>>isinstance(a,str)
False

>>>a=122
>>>isinstance(a,float)
False