How python interpreter determine the type of variable at runtime?

Question

I just want to know how python's (python 2.7) interpreter is find the type of variable. Like How python Dynamic Type Behaviour internally works.

MacBook-Pro:~ neelabhsingh$ python Python 2.7.12 (default, Jun 29 2016, 14:05:02) >>> type(i) <type 'int'> >>> type(str1) <type 'str'> >>> testFloat = 45.67 >>> type(testFloat) <type 'float'>

Which particular implementation? CPython 2.7 or 3.4? Or others; PyPy, Jython, IronPython, etc? — Open AI - Opting Out
– Open AI - Opting Out, Commented Aug 24, 2016 at 3:39

Alex Taylor · Accepted Answer · 2016-08-24 03:55:10Z

In CPython 2.7 (i.e. the C language implementation of Python), there is a PyObject type. There is also a PyObject_Type function which accesses the type stored in the PyObject i.e. the object carries around type information with it.

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