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can some one please share their knowledge on instance vs object, i am using python 2.7 version.

  1. i created a class and assigned to a variable t

    class test():
    pass

t=test()

    at this point i thought t is an object of class test but when i print i get a instance 

    print t
<__main__.test instance at 0x7fb1a3562b00>

type(t)
<type 'instance'>

  2. now i created another class with object

    class Spam(object): 
    pass

s=Spam()

    so when i printed this i was expecting it to be an object or instance , but i get a class type.

    print s
<__main__.Spam object at 0x7fb1a3560f10>
>>> type(s)
<class '__main__.Spam'>

i thought object is the base class from which all the classes are derived, if i mention in the class def or not. i am confused.

please share your thoughts

thanks pradeep

Patrick Haugh
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pradeep
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  • What you are seeing is the difference between old-style and new-style classes. [See this answer](https://stackoverflow.com/a/54873/8316315) for more details. – Florian Weimer Oct 01 '18 at 14:03
  • An object is very generically *anything* that you can do `.something` on. `test` is an object (yes, it's a `class`, it's a *class object*), `'str'` is an object, *everything* is an object. An *instance* is specifically an object constructed from a class. – deceze Oct 01 '18 at 14:03
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    Do yourself a favour: Use Python 3. The object model changed a bit in between, which makes a few things clearer, among other improvements and new features. – Ulrich Eckhardt Oct 01 '18 at 14:04
  • thanks all for the feedback. i will update to python 3 and look at the link provided. – pradeep Oct 01 '18 at 19:33

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