Native Datatypes
Mark Pilgrim · Apress eBooks · 2009
Let’s cast aside your first Python program for just a minute and talk about datatypes. In Python, every value has a datatype, but you don’t need to declare the datatype of variables. How does that work? Based on each variable’s original assignment, Python figures out what type it is and keeps tracks of that internally. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.