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Popular Python recipes

Popular Python recipes
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The Python Standard Library — Python v2.7.1 documentation While The Python Language Reference describes the exact syntax and semantics of the Python language, this library reference manual describes the standard library that is distributed with Python. It also describes some of the optional components that are commonly included in Python distributions. Python’s standard library is very extensive, offering a wide range of facilities as indicated by the long table of contents listed below. The library contains built-in modules (written in C) that provide access to system functionality such as file I/O that would otherwise be inaccessible to Python programmers, as well as modules written in Python that provide standardized solutions for many problems that occur in everyday programming.

Cookbook/CoupledSpringMassSystem - This cookbook example shows how to solve a system of differential equations. (Other examples include the Lotka-Volterra Tutorial , the Zombie Apocalypse and the KdV example .) This figure shows the system to be modeled: Two objects with masses m 1 and m 2 are coupled through springs with spring constants k 1 and k 2 . The left end of the left spring is fixed. A jQuery inline form validation, because validation is a mess « When it comes to form validation, it’s hard to have a versatile solution that works with every form. Figuring out how to display errors is not a simple task. This is something I tried to remedy with this script.

Python Course: Modular Programming and Modules Modular Programming If you want to develop programs which are readable, reliable and maintainable without too much effort, you have use some kind of modular software design. Especially if your application has a certain size. There exists a variety of concepts to design software in modular form. Modular programming is a software design technique to split your code into separate parts. Perceptron The perceptron algorithm was invented in 1957 at the Cornell Aeronautical Laboratory by Frank Rosenblatt.[1] Definition[edit] The perceptron is a binary classifier which maps its input The Python Tutorial — Python v2.7.1 documentation Python is an easy to learn, powerful programming language. It has efficient high-level data structures and a simple but effective approach to object-oriented programming. Python’s elegant syntax and dynamic typing, together with its interpreted nature, make it an ideal language for scripting and rapid application development in many areas on most platforms. The Python interpreter and the extensive standard library are freely available in source or binary form for all major platforms from the Python Web site, and may be freely distributed.

Cookbook/Zombie Apocalypse ODEINT - This example demonstrates how to solve a system of first order ODEs using SciPy . Note that a Nth order equation can also be solved using SciPy by transforming it into a system of first order equations . In a this lighthearted example, a system of ODEs can be used to model a "zombie invasion", using the equations specified in Munz et al. 2009 . The system is given as: dS/dt = P - B*S*Z - d*S dZ/dt = B*S*Z + G*R - A*S*Z dR/dt = d*S + A*S*Z - G*R

jQuery forms, 100 best 5 years ago, web developers and most programmers were forced to do tons of things in order to program accordingly a website, from the basic layout to defining all the different variables and actions that give life to the site. Developers often utilized JavaScript in some part of the process to facilitate the construction of many different webpages; though JS definitely helped out developers, there were still a lot of things that made them consume dozens of time and achieve minimal results. But since the debut of the powerful framework jQuery, things changed forever. jQuery can be used for many things, from developing fancy animations to simply spice up ordinary designs that were previously difficult to do.

Text Processing in Python (a book) A couple of you make donations each month (out of about a thousand of you reading the text each week). Tragedy of the commons and all that... but if some more of you would donate a few bucks, that would be great support of the author. In a community spirit (and with permission of my publisher), I am making my book available to the Python community. Minor corrections can be made to later printings, and at the least errata noted on this website.

MATLAB Although MATLAB is intended primarily for numerical computing, an optional toolbox uses the MuPAD symbolic engine, allowing access to symbolic computing capabilities. An additional package, Simulink, adds graphical multi-domain simulation and Model-Based Design for dynamic and embedded systems. In 2004, MATLAB had around one million users across industry and academia.[3] MATLAB users come from various backgrounds of engineering, science, and economics. BeginnersGuide New to programming? Python is free and easy to learn if you know where to start! This guide will help you to get started quickly. Chinese Translation New to Python? Cookbook/LoktaVolterraTutorial - This example describes how to integrate ODEs with the scipy.integrate module, and how to use the matplotlib module to plot trajectories, direction fields and other information. You can get the source code for this tutorial here: . Presentation of the Lotka-Volterra Model We will have a look at the Lotka-Volterra model, also known as the predator-prey equations, which is a pair of first order, non-linear, differential equations frequently used to describe the dynamics of biological systems in which two species interact, one a predator and the other its prey. The model was proposed independently by Alfred J. Lotka in 1925 and Vito Volterra in 1926, and can be described by

WebFrameworks A Web framework is a collection of packages or modules which allow developers to write Web applications (see WebApplications) or services without having to handle such low-level details as protocols, sockets or process/thread management. The majority of Web frameworks are exclusively server-side technology, although, with the increased prevalence of AJAX, some Web frameworks are beginning to include AJAX code that helps developers with the particularly tricky task of programming (client-side) the user's browser. At the extreme end of the client-side Web Frameworks is technology that can use the web browser as a full-blown application execution environment (a la gmail for example): see Web Browser Programming for details. Generally, frameworks provide support for a number of activities such as interpreting requests (getting form parameters, handling cookies and sessions), producing responses (presenting data as HTML or in other formats), storing data persistently, and so on.

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