Difference: IntroductionToNopIoTAndPython (10 vs. 11)

Revision 112019-06-15 - IsaacArmahMensah

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Slide 1: Introduction to Internet of Things (IoT)

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Thonny Python Shell and Editor

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Here you see the 2 idle windows.

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Here you see the 2 thonny windows.

The top one contains the editor, the second the Python shell

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We can therefore find out if the module is imported or executed by checking the name variable:

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if _name_ == "__main__"

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if __name __ == "__main__"

this executes the main code only if not imported into a main program

Packages

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Packages simple group of modules under one name.

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Packages simply group modules under one name.

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Each package is a directory which MUST contain a a specific file calle

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Each package is a directory which MUST contain a specific file called

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__init__.py which indicating the directory is a package.

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__init__.py indicating the directory is a package.

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the init.py file may be empty.

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the __ init __.py file may be empty.

Package can be imported the same way as module.

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Classes

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Class

Almost everything in Python is an object, with its properties and methods.

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A child class inherits the attributes and methods from its parent class.

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Creating Classes

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Creating a Class

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The syntax for creation of classes is similar to functions

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The syntax for creating a class is similar to functions

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The short description of the class can be found in the instance variable __Doc.__

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Classes Example

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Class Example

Libraries

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Libraries are a collection python packages that are found in different that gives a package hierarchy.

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Python library is a collection of functions and methods that allows you to

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The only difference is python libraries or packages have a init.py file present in its directories.

A very typical example of a python library is matplotlib for plotting.

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perform many actions without writing your code

A very typical example of a python library is matplotlib for plotting.

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