In order to experiment programming, you must have the ability to execute expressions. Fortunately, Python has an interactive mode that enables you to experience directly the expressions that gradually write. Launching an interpreter, which can be both Linux and Windows, we get the following message (subject to change depending on the system and version):
Python 2.2.3 (# 1, Dec 12 2010, 10:30:38)
[GCC 2.95.3 20010315 (release)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
We can then directly enter the expressions such as 2 +2 and see the results, using python as a desktop computer. Of course, once developed a program, you want to distribute to users. We have much to say yet to get around this problem, but it seems only right to mention what are the methods of distribution programs, which depend on operating systems.
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