Python is a
popular programming language. It was created in 1991 by Guido van Rossum.
- web development (server-side),
- software development,
- mathematics,
- system scripting.
Python
is a widely used general-purpose, high level programming language.
How was Python Born?
·
On October 16 of 2000, Python 2.0 released and it had many major new
features including cycle-detecting garbage collector for memory management and
support for Unicode.
· The next version of Python 3.0 released on December 3, 2008.
Now
we know how Python came into the picture. So, moving ahead in this Python
tutorial, let us jump to Python Architecture.
i. Parser
ii. Compiler
iii. Interpreter
- Functions: A function in Python is a collection
of statements grouped under a name. You can use it whenever you want to execute
all those statements at a time. You can call it wherever you want and as many
times as you want in a program. A function may return a value.
- Classes: As we discussed earlier, Python is an
object-oriented language. It supports classes and objects. A class is an
abstract data type. In other words, it is a blueprint for an object of a
certain kind. It holds no values. An object is a real-world entity and an
instance of a class.
- Modules: A Python module is a collection of
related classes and functions. We have modules for mathematical calculations,
string manipulations, web programming, and many more. We will discuss Python
Module in detail in a later lesson.
- Packages: Python package is a collection of related modules. You
can either import a package or create your own.
- List: List is an ordered sequence of items. It is one of the most used
datatype in Python and is very flexible. All the items in a list do not need to
be of the same type
Python is a
popular programming language. It was created in 1991 by Guido van Rossum.
It is used
for:
- web development (server-side),
- software development,
- mathematics,
- system scripting.
Python
is a widely used general-purpose, high level programming language.
It
was initially designed by Guido
van Rossum in 1991 and developed by Python
Software Foundation.
It
was mainly developed for emphasis on code readability, and its syntax allows
programmers to express concepts in fewer lines of code.
Python is a programming language that lets you work quickly and
integrate systems more efficiently.
The Python IDLE (Integrated Development Environment) executes
instructions one line at a time. This also lets us use it as a
calculator.
There are
two major Python versions- Python
2 and Python 3. Both are quite different.
Why is it called Python?
Going into etymology, Guido van Rossum named it
after the comedy group Monty Python. That is why the metasyntactic variables (those we will often use to explain code
syntax) used here are ‘spam’ and ‘eggs’ instead of ‘foo’ and
‘bar’. A lot of implementations today run version 2.x, but the future belongs
to Python 3.x. It is also called ‘Python 3000’ or ‘Py3K’. CPython, written in C, is the
most common implementation of Python.
How was Python Born?
·
The Python programming language was
conceived in the late 1980s and was named after the BBC TV show Monty Python’s Flying Circus. Guido van
Rossum started implementing Python at CWI in the Netherlands in December of
1989. This was a successor to the ABC programming language which was capable ofexception handling and interfacing with
the Amoeba operating system.
· The next version of Python 3.0 released on December 3, 2008.
Now
we know how Python came into the picture. So, moving ahead in this Python
tutorial, let us jump to Python Architecture.
Python
Architecture
Let’s
now talk about Python architecture and its usual flow –
i. Parser
It
uses the source code to generate an abstract syntax tree.
ii. Compiler
It
turns the abstract syntax tree into Python bytecode.
iii. Interpreter
Python Constructs:
- Functions: A function in Python is a collection of statements grouped under a name. You can use it whenever you want to execute all those statements at a time. You can call it wherever you want and as many times as you want in a program. A function may return a value.
- Classes: As we discussed earlier, Python is an object-oriented language. It supports classes and objects. A class is an abstract data type. In other words, it is a blueprint for an object of a certain kind. It holds no values. An object is a real-world entity and an instance of a class.
- Modules: A Python module is a collection of related classes and functions. We have modules for mathematical calculations, string manipulations, web programming, and many more. We will discuss Python Module in detail in a later lesson.
- Packages: Python package is a collection of related modules. You
can either import a package or create your own.
- List: List is an ordered sequence of items. It is one of the most used datatype in Python and is very flexible. All the items in a list do not need to be of the same type
What
can Python do?
- Python can be used on a server to create web applications.
- Python can be used alongside software to create workflows.
- Python can connect to database systems. It can also read and modify
files.
- Python can be used to handle big data and perform complex
mathematics.
- Python can be used for rapid prototyping, or for production-ready
software development.
Why
Python?
- Python works on different platforms (Windows, Mac, Linux, Raspberry
Pi, etc).
- Python has a simple syntax similar to the English language.
- Python has syntax that allows developers to write programs with
fewer lines than some other programming languages.
- Python runs on an interpreter system, meaning that code can be
executed as soon as it is written. This means that prototyping can be very
quick.
- Python can be treated in a procedural way, an object-orientated way
or a functional way.
Good
to know
- The most recent major version of Python is Python 3, which we shall
be using in this tutorial. However, Python 2, although not being updated
with anything other than security updates, is still quite popular.
- In this tutorial Python will be written in a text editor. It is
possible to write Python in an Integrated Development Environment, such as
Thonny, Pycharm, Netbeans or Eclipse which are particularly useful when
managing larger collections of Python files.
Python
Syntax compared to other programming languages
- Python was designed to for readability, and has some similarities
to the English language with influence from mathematics.
- Python uses new lines to complete a command, as opposed to other
programming languages which often use semicolons or parentheses.
- Python relies on indentation, using whitespace, to define scope;
such as the scope of loops, functions and classes. Other programming
languages often use curly-brackets for this purpose.
What
can Python do?
- Python can be used on a server to create web applications.
- Python can be used alongside software to create workflows.
- Python can connect to database systems. It can also read and modify
files.
- Python can be used to handle big data and perform complex
mathematics.
- Python can be used for rapid prototyping, or for production-ready
software development.
Why
Python?
- Python works on different platforms (Windows, Mac, Linux, Raspberry
Pi, etc).
- Python has a simple syntax similar to the English language.
- Python has syntax that allows developers to write programs with
fewer lines than some other programming languages.
- Python runs on an interpreter system, meaning that code can be
executed as soon as it is written. This means that prototyping can be very
quick.
- Python can be treated in a procedural way, an object-orientated way
or a functional way.
Good
to know
- The most recent major version of Python is Python 3, which we shall
be using in this tutorial. However, Python 2, although not being updated
with anything other than security updates, is still quite popular.
- In this tutorial Python will be written in a text editor. It is
possible to write Python in an Integrated Development Environment, such as
Thonny, Pycharm, Netbeans or Eclipse which are particularly useful when
managing larger collections of Python files.
Python
Syntax compared to other programming languages
- Python was designed to for readability, and has some similarities
to the English language with influence from mathematics.
- Python uses new lines to complete a command, as opposed to other
programming languages which often use semicolons or parentheses.
- Python relies on indentation, using whitespace, to define scope;
such as the scope of loops, functions and classes. Other programming
languages often use curly-brackets for this purpose.
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