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A Gentle Introduction to Programming Using Python

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python - Best ways to teach a beginner to program www.catonmat One of the upcoming projects I am doing (I will reveal it in one of the next blog posts.) is going to be written entirely in Python. I have a good understanding of Python but, same as I had with JavaScript, I have little experience doing projects from the ground up in it. Update: the project was redditriver.com, read designing redditriver.com (includes full source code). Before diving into the project I decided to take a look at a few Python video lectures to learn language idioms and features which I might have not heard of. Finding Python video lectures was pretty easy as I run a free video lecture blog. First Python Lecture: Python for Programmers Interesting moments in the lecture: [07:15] There are several Python implementations - CPython, PyPy, IronPython and Jython. Okay, this talk was a very basic talk and it really was an introduction for someone who never worked in Python. Second Python Lecture: Advanced Python or Understanding Python Question and answer session: PS.

Snake Tutorial Write an init function (and several helper functions) so that the program creates the snakeBoard like this (with positive values highlighted for clarity): snakeBoard = [ [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], [ 0, 0, 0, 0, 4, 5, 6, 0, 0, 0 ], [ 0, 0, 0, 0, 3, 0, 7, 0, 0, 0 ], [ 0, 0, 0, 1, 2, 0, 8, 0, 0, 0 ], [ 0, 0, 0, 0, 0, 0, 9, 0, 0, 0 ], [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ] [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ] ] And then draws the initial board like this: Printing these instructions: Snake! Here is the init function we used: def init(canvas): printInstructions() loadSnakeBoard(canvas) redrawAll(canvas) Of course, you have to write these three functions. With this description, see if you can start from snake0.py and write snake1.py.

Learn Python The Hard Way This exercise has no code. It is simply the exercise you complete to get your computer to run Python. You should follow these instructions as exactly as possible. For example, Mac OS X computers already have Python 2, so do not install Python 3 (or any Python). Go to with your browser, get the Notepad++ text editor, and install it. From now on, when I say "Terminal" or "shell" I mean PowerShell and that's what you should use. Warning Sometimes you install Python on Windows and it doesn't configure the path correctly. > python ActivePython 2.6.5.12 (ActiveState Software Inc.) based on Python 2.6.5 (r265:79063, Mar 20 2010, 14:22:52) [MSC v.1500 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> quit()> mkdir mystuff > cd mystuff ... It is still correct if you see different information than mine, but yours should be similar. A major part of this book is learning to research programming topics online.

CS1 Python Programming Projects Archive In 2007 we switched our CS1 course to Python from C++. In 2012 we switched from Python2 to Python3. We have now accumulated many programming projects (over 100 at last count), and thought that it would benefit the CS1 Python community to share them. Solutions are here, but we haven't figured out the best way to share them. This archive is organized on the order that we cover topics. We would like to have others add to this collection. If you find problems with this page, email us. William Punch and Richard Enbody, The Practice of Computing Using Python, 2nd.

2. Built-in Functions Open a file, returning an object of the file type described in section File Objects. If the file cannot be opened, IOError is raised. When opening a file, it’s preferable to use open() instead of invoking the file constructor directly. The first two arguments are the same as for stdio‘s fopen(): name is the file name to be opened, and mode is a string indicating how the file is to be opened. The most commonly-used values of mode are 'r' for reading, 'w' for writing (truncating the file if it already exists), and 'a' for appending (which on some Unix systems means that all writes append to the end of the file regardless of the current seek position). If mode is omitted, it defaults to 'r'. The optional buffering argument specifies the file’s desired buffer size: 0 means unbuffered, 1 means line buffered, any other positive value means use a buffer of (approximately) that size (in bytes). In addition to the standard fopen() values mode may be 'U' or 'rU'.

Pages Personnelles: Erreur 500 - Erreur interne du serveur En 1989, le hollandais Guido van Rossum commence le développement du langage de programmation Python. Python est un langage multiplateforme, c'est-à-dire disponible sur plusieurs architectures (compatible PC, tablettes, smartphones, ordinateur low cost Raspberry Pi...) et systèmes d'exploitation (Windows, Linux, Mac, Android...). Le langage Python est gratuit, sous licence libre. C'est un des langages informatiques les plus populaires avec C, C++, C#, Objective-C, Java, PHP, JavaScript, Delphi, Visual Basic, Ruby et Perl (liste non exhaustive). Actuellement, Python en est à sa version 3. Que peut-on faire avec Python ? Beaucoup de choses ! Des dizaines de milliers de librairies sont disponibles sur le dépôt officiel PyPI. Installation Sous Windows Sous Windows, pour installer Python avec l'environnement de développement IDLE, il suffit de télécharger puis d'exécuter le fichier d'installation qui se trouve sur le site officiel : Sous Linux Scripts Horloge

Cheatsheet - Python & R codes for common Machine Learning Algorithms In his famous book – Think and Grow Rich, Napolean Hill narrates story of Darby, who after digging for a gold vein for a few years walks away from it when he was three feet away from it! Now, I don’t know whether the story is true or false. But, I surely know of a few Data Darby around me. Like Darby, they are surely missing from a lot of action after reaching this close! Today’s cheat sheet aims to change a few Data Darby’s to machine learning advocates. For the super lazy Data Darbies, we will make your life even easier. Keep this cheat sheet handy when you work on data sets. download the complete cheat sheet here: PDF Version If you like what you just read & want to continue your analytics learning, subscribe to our emails, follow us on twitter or join our Facebook Group Related Year in Review: Best of Analytics Vidhya from 2015 Introduction People say that 90% of startups fail by the time they reach their year 2! December 28, 2015 In "Business Analytics" August 10, 2015

Writing a game in Python with Pygame. Part I Introduction Games are one of the most applicative areas of programming. To write even the simplest games, you have to get into graphics, math, physics and even AI. It’s a great and fun way to practice programming. If you’re a fan of Python (and even if you aren’t) and are interested in games, Pygame is a great library for game programming, and you should definitely check it out. There are quite a lot of Pygame tutorials on the web, but most of them are basic. This tutorial explicitly encourages you to tinker with the code. Preliminaries For reasons I’ve mentioned above, this tutorial is not for complete beginners. Here, I assume that you have the following knowledge: Python (you don’t have to be an advanced user, but not a complete beginner either)Basics of math and physics (vectors, rectangles, laws of movement, probability, etc.). Let’s get started While this is not yet a game per se, it’s a useful starting point, from which we can implement many various ideas. The code Pygame’s docs

How to Build a Crawler in Python Short Bytes: Web crawler is a program that browses the Internet (World Wide Web) in a predetermined, configurable and automated manner and performs given action on crawled content. Search engines like Google and Yahoo use spidering as a means of providing up-to-date data. Webhose.io, a company which provides direct access to live data from hundreds of thousands of forums, news and blogs, on Aug 12, 2015, posted the articles describing a tiny, multi-threaded web crawler written in python. I wrote as “Dirty”, “Iffy”, “Bad”, “Not very good”. The python based multi-threaded crawler is pretty simple and very fast. Save the above code with some name lets say “myPythonCrawler.py”. $ python myPythonCrawler.py Sit back and enjoy this web crawler in python. Become a Pro in Python With These Courses Do you like this dead simple python based multi-threaded web crawler? Also Read: How To Create Bootable USB Without Any Software In Windows 10

Didacticiel 002 : comprendre le layout Pack dans les interfaces Tkinter - Calogero GIGANTE 1) A propos des Geometry Manager Tkinter contient trois types de gestionnaire (= Geometry Manager) pour positionner les éléments d'une interface graphique. Je les nomme : il s'agit de Grid, Pack et Place. Contrairement à ce qu'on peut lire dans de nombreux forums sur Python, il est tout à fait permis d'utiliser PLUSIEURS gestionnaires de positionnement différent dans une même application avec Tkinter. Sans ça, je ne vois d'ailleurs pas comment on pourrait faire des interfaces plus ou moins sophistiquées... C'est tout bonnement impossible. C'est seulement au sein d'un même élément "conteneur" (c-à-d capable de recevoir des éléments : boutons, listbox, etc...), qu'il faut rester impérativement dans le Geometry Manager choisi. Le conteneur par excellence est l'élément Frame(). 2) Comment fonctionne réellement Pack ? Pack fonctionne en réalité en utilisant ce que j'appelerais "la cavité restante". Nous obtenons une fenêtre qui affiche un frame carré de 300 pixels de côté. Principe général :

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