Introduction to python lecture (1)

PythonTutorials
Lecture -1-
By: Ali Sattar
To: Everyone

Contents:
1.What python?
2.What is the general concepts of python?
3.What is the advantages of python (Why we use python language)?
4. What is the main applications of python?
5. DataType in Python.

Python is a OOP language and a high level language programming language.
Python is designed by “Guido Van Rossum”. Python is consider powerful
programming language for designing a multiple apps which i will mention them later,
the main feature of using python is “python syntax is too much easy to read, write
and also to understand”.
1.What is Python?

2.1 Case Sensitive: Python is a case-sensitive language, for example: object ‘a’ and object
‘A’ are different in names and interpreter will treats them separately.
2.2 Indenting: Python has one concept which in non-exist in other languages is
“indenting”. Indenting occurs when the user press on space key instead of tab key (mixing
between space and tab keys).
2.3 Object: All of what is written from data in our code is about “Object” and absolutely
python is OOP language as i mentioned before.

2.4 Scope: Here is a new concept in python, scope means when we want to access a name
of any identifier we already have in a specific module from the current module, so it like
linking connection between a two modules and accessing the data with each other. This
access lead us to define a new concept called “Scope”.
2.5 Namespace: The namespace is the name of your module and also the name of every
library which you try to import in your module. Namespaces and scope are related to each
other because in scope we want to access that name through that namespace.

3.Why we use python?
3.1 Simple Syntax: Python is easy to learn and simple language with a simple syntax.
3.2 Free and Open-source: Python is free and open-source language which means it will
easily running on all platforms and free to download and no trials found there.
3.3 Portability: It is possible to run python programs on another platform without any
problem.
3.4 No Restriction: With python, you don’t need really to care about the type of the
variable too much and write it before the object name, there is no need to do that. In
python, objects can be interpreted according to its value and you don’t need to semicolon.

3.Why we use python?
3.5 Interpreted Language: Python is an interpreted language, this means that any code
you write in the editor will be understood by the computer itself, no need to compiler like
C++ and other high-level languages.
3.6 Large Standard Libraries: Python has a rich set of common libraries for all
programmer in the world, one of this common libraries is Scapy which used to analyze the
network packets and much more things.
3.7 Huge Support: Python recently acquired a huge support, especially it use to solve a
complex problem with less codes and in an efficient way too. For example, it can solve
robotics projects and can be used for any branch use in AI.

4.What is the application of python?
Python can be used for many applications, the apps are listed below:
► Web: Python can be used to design a good web apps using some of frameworks or
platforms such as: Django, Flask, Pyramid and even Django CMS.
► Scientific and Numeric Computing: With python, you can do the scientific and
numeric calculations using some of common libraries such as: SciPy and NumPy.
► Network: Python is especially created for this purpose, there are many libraires used to
deal with the networks such as: Scapy, NetworkX, .. etc.
► Games: Python can be used to design a 2D games with the common library Pygame.

Introduction to python lecture (1)

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