Python, objects and Garbage Collections

An object, in Python, is a structure of data generated by the code in execution.

Until the objects are useful they are kept in memory. In practice, they will be deleted, through a mechanism called garbage collection, when there will be no labels (names) refferring to them.
The objects got type and identity (id) attribute.

Let's create an object that has a label "varname" and that is an int type

Now, if I give another value to varname

>>> varname = 500

The label varname now refers to another object 500 of int type. The old object 33 does not have a label anymore, so python cannot use it anymore. The garbage collection mechanism will free the memory for this object then.

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