Python online help

To consult the Python online help we need to type the help () command to receive information on the use of the python interpreter. After issuing the command, you receive a welcome message from the online help function that invites us in case we were beginners to see the tutorial available on the Internet at the following url:

http://docs.python.org/tutorial/:

>>> help()

Welcome to Python 3.6's help utility!

If this is your first time using Python, you should definitely check out
the tutorial on the Internet at http://docs.python.org/3.6/tutorial/.

Enter the name of any module, keyword, or topic to get help on writing
Python programs and using Python modules. To quit this help utility and
return to the interpreter, just type "quit".

To get a list of available modules, keywords, symbols, or topics, type
"modules", "keywords", "symbols", or "topics". Each module also comes
with a one-line summary of what it does; to list the modules whose name
or summary contain a given string such as "spam", type "modules spam".

In the online help, as already mentioned with the help () command, just enter the name of any module, keyword or topic to get help in drafting Python programs. To exit the online guide to return to the interpreter, simply type “quit”. Instead, to obtain a list of available modules, expected keywords or usable topics, you will need to type “modules”, “keywords”, or “topics”.

Each module then has a summary contained in the online help in which all its features are listed, while to list the modules whose synthesis contains a given word we will have to add it to the word modules. For example, to get information on the array module we will insert this name in the shell of the online help to get the information shown in the figure.

Python online help

It is therefore advisable to consult the online help of the Python interpreter whenever you find yourself having to use a Python resource that you do not know adequately; we have seen that through the help of the Python Interactive Shell it will be easy and immediate to obtain sufficient documentation.

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