Python W3

 
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Release Date: July 8, 2019

  • Python Needs You. Open source software is made better when users can easily contribute code and documentation to fix bugs and add features. Python strongly encourages community involvement in improving the software.
  • The name Python was selected from 'Monty Python's Flying Circus' which was a British sketch comedy series created by the comedy group Monty Python and broadcast by the BBC from 1969 to 1974. Python was created in the early 1990s by Guido van Rossum at the National Research Institute for Mathematics and Computer Science in Netherlands.

Python 3.7.4 was the fourth bugfix release of Python 3.7.

There are now newer bugfix releases of Python 3.7 that supersede 3.7.4 and Python 3.8 is now the latest feature release of Python 3. Get the latest releases of 3.7.x and 3.8.x here. We plan to continue to provide bugfix releasesfor 3.7.x until mid 2020 and security fixes until mid 2023.

Using a 'def' statement for defining a function is the corner store of a majority of programs in Python.To group a set of statements, programmers use functions, and they can be run more than once in a program. They act like a pack of instructions that is invoked by a name. Python basic (Part -I) 150 exercises with solution An editor is available at the bottom of the page to write and execute the scripts.1. Write a Python program to print the following string in a specific format (see the output).

Among the major new features in Python 3.7 are:

Python W3
  • PEP 539, new C API for thread-local storage
  • PEP 545, Python documentation translations
  • New documentation translations: Japanese,French, andKorean.
  • PEP 552, Deterministic pyc files
  • PEP 553, Built-in breakpoint()
  • PEP 557, Data Classes
  • PEP 560, Core support for typing module and generic types
  • PEP 562, Customization of access to module attributes
  • PEP 563, Postponed evaluation of annotations
  • PEP 564, Time functions with nanosecond resolution
  • PEP 565, Improved DeprecationWarning handling
  • PEP 567, Context Variables
  • Avoiding the use of ASCII as a default text encoding (PEP 538, legacy C locale coercionand PEP 540, forced UTF-8 runtime mode)
  • The insertion-order preservation nature of dict objects is now an official part of the Python language spec.
  • Notable performance improvements in many areas.

Please see What’s New In Python 3.7 for more information.

  • PEP 537, 3.7 Release Schedule
  • Report bugs at https://bugs.python.org.
  • Help fund Python and its community.
  • Changed in 3.7.4 OpenSSL has been updated from 1.1.0 to 1.1.1 and SQLite updated to 3.28.0.
  • The binaries for AMD64 will also work on processors that implement the Intel 64 architecture. (Also known as the 'x64' architecture, and formerly known as both 'EM64T' and 'x86-64'.)
  • There are now 'web-based' installers for Windows platforms; the installer will download the needed software components at installation time.
  • There are redistributable zip files containing the Windows builds, making it easy to redistribute Python as part of another software package. Please see the documentation regarding Embedded Distribution for more information.
  • Changed in 3.7.4 OpenSSL has been updated from 1.1.0 to 1.1.1 and SQLite updated to 3.28.0.
  • For Python 3.7.4, we provide two binary installer options for download. The default variant is 64-bit-only and works on macOS 10.9 (Mavericks) and later systems. Changed in 3.7.4 The 64-bit/32-bit variant that also works on very old versions of macOS, from 10.6 (Snow Leopard) on, is now deprecated and will no longer be provided in future releases; see the macOS installer ReadMe file for more info. Both variants come with batteries-included versions of Tcl/Tk 8.6 for users of IDLE and other tkinter-based GUI applications; third-party and system versions of Tcl/Tk are no longer used.
  • Both python.org installer variants include private copies of OpenSSL. Please carefully read the Important Information displayed during installation for information about SSL/TLS certificate validation and the Install Certificates.command.
VersionOperating SystemDescriptionMD5 SumFile SizeGPG
Gzipped source tarballSource release68111671e5b2db4aef7b9ab01bf0f9be23017663SIG
XZ compressed source tarballSource released33e4aae66097051c2eca45ee360480317131432SIG
macOS 64-bit/32-bit installerMac OS Xfor Mac OS X 10.6 and later6428b4fa7583daff1a442cba8cee08e634898416SIG
macOS 64-bit installerMac OS Xfor OS X 10.9 and later5dd605c38217a45773bf5e4a936b241f28082845SIG
Windows help fileWindowsd63999573a2c06b2ac56cade6b4f7cd28131761SIG
Windows x86-64 embeddable zip fileWindowsfor AMD64/EM64T/x649b00c8cf6d9ec0b9abe83184a40729a27504391SIG
Windows x86-64 executable installerWindowsfor AMD64/EM64T/x64a702b4b0ad76debdb3043a583e56340026680368SIG
Windows x86-64 web-based installerWindowsfor AMD64/EM64T/x6428cb1c608bbd73ae8e53a3bd351b4bd21362904SIG
Windows x86 embeddable zip fileWindows9fab3b81f8841879fda94133574139d86741626SIG
Windows x86 executable installerWindows33cc602942a54446a3d645147639478925663848SIG
Windows x86 web-based installerWindows1b670cfa5d317df82c30983ea371d87c1324608SIG
  • Python 3 Basic Tutorial
  • Python 3 Advanced Tutorial
  • Python 3 Useful Resources
  • Selected Reading

Python is a general-purpose interpreted, interactive, object-oriented, and high-level programming language. It was created by Guido van Rossum during 1985- 1990. Like Perl, Python source code is also available under the GNU General Public License (GPL). Python is named after a TV Show called ëMonty Pythonís Flying Circusí and not after Python-the snake.

Python 3.0 was released in 2008. Although this version is supposed to be backward incompatibles, later on many of its important features have been backported to be compatible with version 2.7.This tutorial gives enough understanding on Python 3 version programming language. Please refer to this link for our Python 2 tutorial.

Why to Learn Python 3?

Python is a high-level, interpreted, interactive and object-oriented scripting language. Python is designed to be highly readable. It uses English keywords frequently where as other languages use punctuation, and it has fewer syntactical constructions than other languages.

Python is a MUST for students and working professionals to become a great Software Engineer specially when they are working in Web Development Domain. I will list down some of the key advantages of learning Python:

Python
  • Python is Interpreted − Python is processed at runtime by the interpreter. You do not need to compile your program before executing it. This is similar to PERL and PHP.

  • Python is Interactive − You can actually sit at a Python prompt and interact with the interpreter directly to write your programs.

  • Python is Object-Oriented − Python supports Object-Oriented style or technique of programming that encapsulates code within objects.

  • Python is a Beginner's Language − Python is a great language for the beginner-level programmers and supports the development of a wide range of applications from simple text processing to WWW browsers to games.

Python W3schools Tutorial

Characteristics of Python

Following are important characteristics of python −

  • It supports functional and structured programming methods as well as OOP.

  • It can be used as a scripting language or can be compiled to byte-code for building large applications.

  • It provides very high-level dynamic data types and supports dynamic type checking.

  • It supports automatic garbage collection.

  • It can be easily integrated with C, C++, COM, ActiveX, CORBA, and Java.

Hello World using Python.

Just to give you a little excitement about Python, I'm going to give you a small conventional Python Hello World program, You can try it using Demo link.

Applications of Python

As mentioned before, Python is one of the most widely used language over the web. I'm going to list few of them here:

Python W3 Tutorial

  • Easy-to-learn − Python has few keywords, simple structure, and a clearly defined syntax. This allows the student to pick up the language quickly.

  • Easy-to-read − Python code is more clearly defined and visible to the eyes.

  • Easy-to-maintain − Python's source code is fairly easy-to-maintain.

  • A broad standard library − Python's bulk of the library is very portable and cross-platform compatible on UNIX, Windows, and Macintosh.

  • Interactive Mode − Python has support for an interactive mode which allows interactive testing and debugging of snippets of code.

  • Portable − Python can run on a wide variety of hardware platforms and has the same interface on all platforms.

  • Extendable − You can add low-level modules to the Python interpreter. These modules enable programmers to add to or customize their tools to be more efficient.

  • Databases − Python provides interfaces to all major commercial databases.

  • GUI Programming − Python supports GUI applications that can be created and ported to many system calls, libraries and windows systems, such as Windows MFC, Macintosh, and the X Window system of Unix.

  • Scalable − Python provides a better structure and support for large programs than shell scripting.

Python W3 Tutorial

Audience

W3 Python School

This tutorial is designed for software programmers who want to upgrade their Python skills to Python 3. This tutorial can also be used to learn Python programming language from scratch.

Prerequisites

Python W3

You should have a basic understanding of Computer Programming terminologies. A basic understanding of any of the programming languages is a plus.