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Notice: While JavaScript is not essential for this website, your interaction with the content will be limited. Please turn JavaScript on for the full experience. Skip to content ▼ Close * Python * PSF * Docs * PyPI * Jobs * Community ▲ The Python Network Donate ≡ Menu Search This Site GO * A A * Smaller * Larger * Reset * Socialize * Facebook * Twitter * Chat on IRC * Sign In * Sign Up / Register * Sign In * About * Applications * Quotes * Getting Started * Help * Python Brochure * PYTHON IS A PROGRAMMING LANGUAGE THAT LETS YOU WORK MORE QUICKLY AND INTEGRATE YOUR SYSTEMS MORE EFFECTIVELY. You can learn to use Python and see almost immediate gains in productivity and lower maintenance costs. Learn more about Python.. * Downloads * All releases * Source code * Windows * macOS * Other Platforms * License * Alternative Implementations * DOWNLOAD FOR MACOS Python 3.10.6 Not the OS you are looking for? Python can be used on many operating systems and environments. View the full list of downloads. PYTHON SOURCE Python 3.10.6 Not the OS you are looking for? Python can be used on many operating systems and environments. View the full list of downloads. DOWNLOAD FOR WINDOWS Python 3.10.6 Note that Python 3.9+ cannot be used on Windows 7 or earlier. Not the OS you are looking for? Python can be used on many operating systems and environments. View the full list of downloads. DOWNLOAD PYTHON FOR ANY OS Python can be used on many operating systems and environments. View the full list of downloads * Documentation * Docs * Audio/Visual Talks * Beginner's Guide * Developer's Guide * FAQ * Non-English Docs * PEP Index * Python Books * Python Essays * PYTHON’S STANDARD DOCUMENTATION: DOWNLOAD, BROWSE OR WATCH A TUTORIAL. Get started below, or visit the Documentation page to browse by version. Python Docs * Community * Diversity * Mailing Lists * IRC * Forums * PSF Annual Impact Report * Python Conferences * Special Interest Groups * Python Logo * Python Wiki * Merchandise * Community Awards * Code of Conduct * Get Involved * Shared Stories * THE PYTHON COMMUNITY Great software is supported by great people. Our user base is enthusiastic, dedicated to encouraging use of the language, and committed to being diverse and friendly. * Success Stories * Arts * Business * Education * Engineering * Government * Scientific * Software Development * > “We feel much better equipped now to handle the challenges. And if we run > into an issue, we’ll come to Caktus to hammer it out," said Stephen > Johnston, VP of Engineering, at Force Therapeutics. Caktus Group, Caktus Group * News * Python News * PSF Newsletter * Community News * PSF News * PyCon News * Events * Python Events * User Group Events * Python Events Archive * User Group Events Archive * Submit an Event * Find events from the Python Community around the world! * >_ Launch Interactive Shell * # Python 3: Fibonacci series up to n >>> def fib(n): >>> a, b = 0, 1 >>> while a < n: >>> print(a, end=' ') >>> a, b = b, a+b >>> print() >>> fib(1000) 0 1 1 2 3 5 8 13 21 34 55 89 144 233 377 610 987 FUNCTIONS DEFINED The core of extensible programming is defining functions. Python allows mandatory and optional arguments, keyword arguments, and even arbitrary argument lists. More about defining functions in Python 3 * # Python 3: List comprehensions >>> fruits = ['Banana', 'Apple', 'Lime'] >>> loud_fruits = [fruit.upper() for fruit in fruits] >>> print(loud_fruits) ['BANANA', 'APPLE', 'LIME'] # List and the enumerate function >>> list(enumerate(fruits)) [(0, 'Banana'), (1, 'Apple'), (2, 'Lime')] COMPOUND DATA TYPES Lists (known as arrays in other languages) are one of the compound data types that Python understands. Lists can be indexed, sliced and manipulated with other built-in functions. More about lists in Python 3 * # Python 3: Simple arithmetic >>> 1 / 2 0.5 >>> 2 ** 3 8 >>> 17 / 3 # classic division returns a float 5.666666666666667 >>> 17 // 3 # floor division 5 INTUITIVE INTERPRETATION Calculations are simple with Python, and expression syntax is straightforward: the operators +, -, * and / work as expected; parentheses () can be used for grouping. More about simple math functions in Python 3. * # Python 3: Simple output (with Unicode) >>> print("Hello, I'm Python!") Hello, I'm Python! # Input, assignment >>> name = input('What is your name?\n') >>> print('Hi, %s.' % name) What is your name? Python Hi, Python. QUICK & EASY TO LEARN Experienced programmers in any other language can pick up Python very quickly, and beginners find the clean syntax and indentation structure easy to learn. Whet your appetite with our Python 3 overview. * # For loop on a list >>> numbers = [2, 4, 6, 8] >>> product = 1 >>> for number in numbers: ... product = product * number ... >>> print('The product is:', product) The product is: 384 ALL THE FLOW YOU’D EXPECT Python knows the usual control flow statements that other languages speak — if, for, while and range — with some of its own twists, of course. More control flow tools in Python 3 1. 1 2. 2 3. 3 4. 4 5. 5 Python is a programming language that lets you work quickly and integrate systems more effectively. Learn More GET STARTED Whether you're new to programming or an experienced developer, it's easy to learn and use Python. Start with our Beginner’s Guide DOWNLOAD Python source code and installers are available for download for all versions! Latest: Python 3.10.6 DOCS Documentation for Python's standard library, along with tutorials and guides, are available online. docs.python.org JOBS Looking for work or have a Python related position that you're trying to hire for? Our relaunched community-run job board is the place to go. jobs.python.org LATEST NEWS More * 2022-08-08 Python 3.11.0rc1 is now available * 2022-08-02 Python 3.10.6 is available * 2022-07-26 Python 3.11.0b5 is now available * 2022-07-21 Distinguished Service Award Granted to Naomi Ceder * 2022-07-11 Python 3.11.0b4 is now available UPCOMING EVENTS More * 2022-08-17 An introduction to cloud-native web applications * 2022-08-19 Kiwi PyCon XI * 2022-08-25 PyCon Estonia * 2022-08-26 Python Nordeste 2022 * 2022-08-29 EuroSciPy 2022 SUCCESS STORIES More > "Python is all about automating repetitive tasks, leaving more time for your > other SEO efforts." Using Python scripts to analyse SEO and broken links on your site by Marnix de Munck USE PYTHON FOR… More * Web Development: Django, Pyramid, Bottle, Tornado, Flask, web2py * GUI Development: tkInter, PyGObject, PyQt, PySide, Kivy, wxPython * Scientific and Numeric: SciPy, Pandas, IPython * Software Development: Buildbot, Trac, Roundup * System Administration: Ansible, Salt, OpenStack, xonsh >>> PYTHON ENHANCEMENT PROPOSALS (PEPS): THE FUTURE OF PYTHON IS DISCUSSED HERE. RSS >>> PYTHON SOFTWARE FOUNDATION The mission of the Python Software Foundation is to promote, protect, and advance the Python programming language, and to support and facilitate the growth of a diverse and international community of Python programmers. Learn more Become a Member Donate to the PSF ▲ Back to Top * About * Applications * Quotes * Getting Started * Help * Python Brochure * Downloads * All releases * Source code * Windows * macOS * Other Platforms * License * Alternative Implementations * Documentation * Docs * Audio/Visual Talks * Beginner's Guide * Developer's Guide * FAQ * Non-English Docs * PEP Index * Python Books * Python Essays * Community * Diversity * Mailing Lists * IRC * Forums * PSF Annual Impact Report * Python Conferences * Special Interest Groups * Python Logo * Python Wiki * Merchandise * Community Awards * Code of Conduct * Get Involved * Shared Stories * Success Stories * Arts * Business * Education * Engineering * Government * Scientific * Software Development * News * Python News * PSF Newsletter * Community News * PSF News * PyCon News * Events * Python Events * User Group Events * Python Events Archive * User Group Events Archive * Submit an Event * Contributing * Developer's Guide * Issue Tracker * python-dev list * Core Mentorship * Report a Security Issue ▲ Back to Top * Help & General Contact * Diversity Initiatives * Submit Website Bug * Status Copyright ©2001-2022. 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