What are the two uses of Python files

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A written python file can be used in two ways:

1. Script, a file is the entire program, used to be executed

two。 Module, in which a bunch of functions are stored in the file to be imported for use

Running run.py directly runs F1 () and f2 () in aaa.py, but if we add if _ _ name _ = = _ _ main__: to aaa.py, we can prevent the execution of F1 () and f2 () when running run.py. Because when aaa.py is executed directly, that is, as an execution file, _ _ name _ = = _ _ main _ _; when aaa.py is run as a module directly, _ _ name _ = = 'aaa'--. This allows aaa.py to be used differently in different scenarios.

What are the main application areas of python? 1. Cloud computing, typical application OpenStack.

2. WEB front-end development, many large websites are developed by Python.

3. Artificial intelligence applications, which are based on big data's analysis and deep learning, have essentially been unable to leave python.

4. System operation and maintenance project, the standard configuration of automatic operation and maintenance is python+Django/flask.

5. Financial management analysis, quantitative transaction, financial analysis.

6. Big data's analysis.

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