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Great, you can now write
your own small Python

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instructions in the Python shell and
use variables to store and reduce data.

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Now is the time to go to the
next step or the next level.

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In the following lessons,
you are going to learn

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how to create more complete
Python programs and reusable code.

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Writing instructions
one by one in the Python

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shell is nice to get started and make some
tests, but you will be quickly limited.

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What you need is to
write Python programs in

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a text editor so you
can reuse and improve

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that program later on
to build real applications.

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So in this section,
first you will install a

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new software which will allow you to
write, save and run Python programs.

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I will explain everything step by step.

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Then you are going to discover
functions, which is one of the

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most important concepts you
need to be able to go further.

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At the end of the
section, you will be able to

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create your own Python
programs with reusable

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blocks of code and
also run those programs.

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And again, first watch all the
lessons of the section without stopping.

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And then come back to each lesson, take
your time to understand and do the exercise.

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Alright, let's get started.