By Tarek Ziadé
Professional Python Programming indicates how Python improvement will be performed with most sensible practices and professional layout assistance.
This ebook is for Python builders who're already development purposes, yet are looking to construct larger ones by means of employing most sensible practices and new improvement recommendations to their initiatives.
The reader is predicted to have a legitimate history in Python programming.
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Essential SQLAlchemy introduces a high-level open-source code library that makes it more straightforward for Python programmers to entry relational databases reminiscent of Oracle, DB2, MySQL, PostgreSQL, and SQLite. SQLAlchemy has turn into more and more well known due to the fact that its liberate, however it nonetheless lacks stable offline documentation. This sensible ebook fills the space, and since a developer wrote it, you get an target examine SQLAlchemy's instruments instead of an advocate's description of the entire "cool" features.
SQLAlchemy contains either a database server-independent SQL expression language and an object-relational mapper (ORM) that permits you to map "plain previous Python objects" (POPOs) to database tables with out considerably altering your current Python code. crucial SQLAlchemy demonstrates find out how to use the library to create an easy database program, walks you thru basic queries, and explains how one can use SQLAlchemy to connect with a number of databases concurrently with an identical Metadata. you furthermore mght learn the way to:
* Create customized forms for use on your schema, and whilst it's worthwhile to take advantage of customized instead of integrated kinds
* Run queries, updates, and deletes with SQLAlchemy's SQL expression language
* construct an item mapper with SQLAlchemy, and comprehend the diversities among this and lively list styles utilized in different ORMs
* Create items, store them to a consultation, and flush them to the database
* Use SQLAlchemy to version item orientated inheritance
* offer a declarative, energetic checklist development to be used with SQLAlchemy utilizing the Elixir extension
* Use the SQLSoup extension to supply an automated metadata and item version in accordance with database mirrored image
In addition, you'll learn the way and while to exploit different extensions to SQLAlchemy, together with AssociationProxy, OrderingList, and more.
Essential SQLAlchemy is the much-needed consultant for each Python developer utilizing this code library. rather than a feature-by-feature documentation, this ebook takes an "essentials" strategy that offers you precisely what you want to turn into effective with SQLAlchemy correct away.
Regular expressions are a really robust device for manipulating textual content and knowledge. they're now ordinary positive factors in quite a lot of languages and renowned instruments, together with Perl, Python, Ruby, Java, VB. web and C# (and any language utilizing the . web Framework), Hypertext Preprocessor, and MySQL.
when you don't use typical expressions but, you can find during this publication an entire new global of mastery over your facts. for those who already use them, you'll get pleasure from this book's exceptional aspect and breadth of assurance. should you imagine you recognize all you must find out about ordinary expressions, this booklet is a beautiful eye-opener.
As this publication exhibits, a command of standard expressions is a useful ability. commonplace expressions let you code advanced and sophisticated textual content processing that you just by no means imagined will be automatic. common expressions can prevent time and aggravation. they are often used to craft stylish suggestions to a variety of difficulties. as soon as you've mastered usual expressions, they'll develop into a useful a part of your toolkit. you'll ask yourself the way you ever bought via with no them.
but regardless of their broad availability, flexibility, and remarkable strength, typical expressions are usually underutilized. but what's energy within the palms of a professional could be fraught with peril for the unwary. gaining knowledge of average Expressions may help you navigate the minefield to turning into a professional and assist you optimize your use of standard expressions.
studying common Expressions, 3rd variation, now incorporates a complete bankruptcy dedicated to Hypertext Preprocessor and its robust and expressive suite of normal expression features, as well as greater personal home page insurance within the imperative "core" chapters. in addition, this version has been up-to-date all through to mirror advances in different languages, together with accelerated in-depth insurance of Sun's java. util. regex package deal, which has emerged because the typical Java regex implementation. themes include:
* A comparability of beneficial properties between diversified types of many languages and instruments
* How the usual expression engine works
* Optimization (major reductions to be had the following! )
* Matching simply what you will want, yet now not what you don't wish
* Sections and chapters on person languages
Written within the lucid, pleasing tone that makes a posh, dry subject develop into crystal-clear to programmers, and sprinkled with suggestions to complicated real-world difficulties, learning average Expressions, 3rd version bargains a wealth info so that you can placed to quick use.
Reviews of this re-creation and the second one edition:
"There isn't a greater (or extra beneficial) publication on hand on usual expressions. "
--Zak Greant, dealing with Director, eZ Systems
"A actual tour-de-force of a publication which not just covers the mechanics of regexes in awesome aspect but in addition talks approximately potency and using regexes in Perl, Java, and . web. .. when you use ordinary expressions as a part of your specialist paintings (even when you have already got an excellent e-book on no matter what language you're programming in) i'd strongly suggest this publication to you. "
--Dr. Chris Brown, Linux Format
"The writer does a very good activity major the reader from regex amateur to grasp. The publication is intensely effortless to learn and chock filled with important and appropriate examples. .. typical expressions are necessary instruments that each developer must have of their toolbox. gaining knowledge of typical Expressions is the definitive advisor to the topic, and an exceptional source that belongs on each programmer's bookshelf. Ten out of Ten Horseshoes. "
--Jason Menard, Java Ranch
The Python Developer's guide is designed to show skilled builders to Python and its makes use of. starting with a short advent to the language and its syntax, the publication strikes quick into extra complicated programming issues, together with embedding Python, community programming, GUI toolkits, JPython, internet improvement, Python/C API, and extra.
Python 201 is the sequel to my first publication, Python one hundred and one. if you happen to already be aware of the fundamentals of Python and now you need to visit the following point, then this is often the e-book for you! This e-book is for intermediate point Python programmers in simple terms. There will not be any newbie chapters the following. This publication is predicated onPython three.
- Methods in Medical Informatics: Fundamentals of Healthcare Programming in Perl, Python, and Ruby (Chapman & Hall/CRC Mathematical and Computational Biology)
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- Python Scripting for Computational Science (3rd Edition) (Texts in Computational Science and Engineering, Volume 3)
- Python In A Nutshell
- Getting Started with Processing.py: Making Interactive Graphics with Processing's Python Mode (Make:)
Extra info for Expert Python Programming: Best practices for designing, coding, and distributing your Python software
To build Python, we will use make and gcc. • make is a program that is used to read configuration files, usually named Makefile, and check that all requirements to compile the program are met. It is also used to drive the compilation. It is invoked with the configure and make commands. • gcc is the GNU C Compiler, an open-source compiler widely used to build programs. Make sure they are both installed on your system. Under some versions of Linux such as Ubuntu, you can install build tools with the build-essentials package.
Py' name. python. pythonstartup' Setting up the PYTHONSTARTUP environment variable: If you are running Linux or Mac OS X, the simplest way is to create the startup script in your home folder. Then link it with a PYTHONSTARTUP environment variable set into the system shell startup script. pythonstartup If you are running Windows, it is easy to set a new environment variable as an administrator in the system preferences, and save the script in a common place instead of using a specific user location.
Staticmethod ... def uncommon(): ... print 'I could be a global function' ... uncommon() I could be a global function When the decorators appeared, many developers in the community started to use them because they became an obvious way to implement some patterns. One of the original mail threads on this was initiated by Jim Hugunin, the IronPython lead developer. The rest of this section presents how to write decorators, and provides a few examples. How to Write a Decorator There are many ways to write custom decorators, but the simplest and most readable way is to write a function that returns a sub-function that wraps the original function call.