By Mark Lutz
Moveable, robust, and a breeze to exploit, Python is the preferred open resource object-oriented programming language used for either standalone courses and scripting functions. Python is taken into account effortless to benefit, yet there is no swifter technique to mastery of the language than studying from knowledgeable instructor. This version of studying Python places you within the fingers of 2 specialist academics, Mark Lutz and David Ascher, whose pleasant, well-structured prose has guided many a programmer to talent with the language.Learning Python, moment version, bargains programmers a entire studying device for Python and object-oriented programming. completely up-to-date for the varied language and sophistication presentation alterations that experience taken position because the unlock of the 1st version in 1999, this consultant introduces the elemental components of the most recent unlock of Python 2.3 and covers new positive aspects, akin to checklist comprehensions, nested scopes, and iterators/generators. past language beneficial properties, this version of studying Python additionally contains new context for less-experienced programmers, together with clean overviews of object-oriented programming and dynamic typing, new discussions of application release and configuration thoughts, new assurance of documentation assets, and extra. There also are new use circumstances all through to make the applying of language positive aspects extra concrete. the 1st a part of studying Python supplies programmers all of the info they're going to have to comprehend and build courses within the Python language, together with varieties, operators, statements, periods, capabilities, modules and exceptions. The authors then current extra complex fabric, displaying how Python plays universal projects through providing actual functions and the libraries to be had for these functions. each one bankruptcy ends with a chain of routines that may try out your Python talents and degree your understanding.Learning Python, moment version is a self-paced publication that permits readers to target the center Python language extensive. As you're employed throughout the ebook, you are going to achieve a deep and entire realizing of the Python language that can assist you to appreciate the bigger application-level examples that you're going to come upon by yourself. in case you are drawn to studying Python--and are looking to achieve this quick and efficiently--then studying Python, moment variation is your only option.
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Essential SQLAlchemy introduces a high-level open-source code library that makes it more uncomplicated for Python programmers to entry relational databases reminiscent of Oracle, DB2, MySQL, PostgreSQL, and SQLite. SQLAlchemy has develop into more and more renowned because its unencumber, however it nonetheless lacks stable offline documentation. This functional booklet fills the distance, and since a developer wrote it, you get an aim examine SQLAlchemy's instruments instead of an advocate's description of the entire "cool" features.
SQLAlchemy comprises either a database server-independent SQL expression language and an object-relational mapper (ORM) that permits you to map "plain outdated Python objects" (POPOs) to database tables with out considerably altering your latest Python code. crucial SQLAlchemy demonstrates tips to use the library to create an easy database software, walks you thru easy queries, and explains the way to use SQLAlchemy to connect with a number of databases at the same time with an analogous Metadata. you furthermore may learn the way to:
* Create customized forms for use on your schema, and whilst it's valuable to exploit 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 variations among this and lively checklist styles utilized in different ORMs
* Create gadgets, keep them to a consultation, and flush them to the database
* Use SQLAlchemy to version item orientated inheritance
* supply a declarative, energetic checklist trend to be used with SQLAlchemy utilizing the Elixir extension
* Use the SQLSoup extension to supply an automated metadata and item version in keeping with database mirrored image
In addition, you'll find out how and while to take advantage of different extensions to SQLAlchemy, together with AssociationProxy, OrderingList, and more.
Essential SQLAlchemy is the much-needed advisor for each Python developer utilizing this code library. rather than a feature-by-feature documentation, this ebook takes an "essentials" method that offers you precisely what you must develop into effective with SQLAlchemy correct away.
Regular expressions are an incredibly robust device for manipulating textual content and information. they're now ordinary beneficial properties in quite a lot of languages and well known instruments, together with Perl, Python, Ruby, Java, VB. web and C# (and any language utilizing the . internet Framework), Hypertext Preprocessor, and MySQL.
if you happen to don't use standard expressions but, you can find during this ebook a complete new global of mastery over your information. in the event you already use them, you'll relish this book's exceptional element and breadth of assurance. if you happen to imagine you recognize all you must find out about typical expressions, this e-book is a gorgeous eye-opener.
As this e-book indicates, a command of standard expressions is a useful ability. commonplace expressions let you code complicated and sophisticated textual content processing that you simply by no means imagined may be automatic. general expressions can prevent time and aggravation. they are often used to craft dependent strategies 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 are going to ask yourself the way you ever received through with no them.
but regardless of their large availability, flexibility, and unprecedented energy, normal expressions are often underutilized. but what's energy within the fingers of knowledgeable may be fraught with peril for the unwary. gaining knowledge of commonplace Expressions may also help you navigate the minefield to turning into knowledgeable and assist you optimize your use of normal expressions.
learning standard Expressions, 3rd version, now encompasses a complete bankruptcy dedicated to Hypertext Preprocessor and its strong and expressive suite of standard expression capabilities, as well as more desirable personal home page assurance within the important "core" chapters. moreover, this variation 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 average Java regex implementation. issues include:
* A comparability of positive aspects between diverse types of many languages and instruments
* How the typical expression engine works
* Optimization (major discounts to be had the following! )
* Matching simply what you will want, yet no longer what you don't wish
* Sections and chapters on person languages
Written within the lucid, wonderful tone that makes a posh, dry subject develop into crystal-clear to programmers, and sprinkled with suggestions to complicated real-world difficulties, learning ordinary Expressions, 3rd version deals a wealth details for you to placed to rapid use.
Reviews of this re-creation and the second one edition:
"There isn't a greater (or extra worthwhile) e-book to be had on commonplace expressions. "
--Zak Greant, handling Director, eZ Systems
"A genuine tour-de-force of a e-book which not just covers the mechanics of regexes in impressive element but in addition talks approximately potency and using regexes in Perl, Java, and . web. .. if you happen to use typical expressions as a part of your specialist paintings (even if you happen to have already got an exceptional publication on no matter what language you're programming in) i'd strongly suggest this ebook to you. "
--Dr. Chris Brown, Linux Format
"The writer does a great task major the reader from regex beginner to grasp. The ebook is intensely effortless to learn and chock choked with worthwhile and suitable examples. .. common expressions are invaluable instruments that each developer must have of their toolbox. getting to know common Expressions is the definitive consultant to the topic, and an excellent 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 creation to the language and its syntax, the booklet strikes speedy into extra complex programming subject matters, together with embedding Python, community programming, GUI toolkits, JPython, net improvement, Python/C API, and extra.
Python 201 is the sequel to my first publication, Python a hundred and one. for those who already understand the fundamentals of Python and now you must visit the subsequent point, then this is often the ebook for you! This ebook is for intermediate point Python programmers purely. There will not be any newbie chapters the following. This e-book is predicated onPython three.
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Extra resources for Learning Python, Second Edition
On Windows, for example, Python scripts can use frameworks to script MS Word and Excel, and serve the same sorts of roles as Visual Basic. Database Programming Python's standard pickle module provides a simple object persistence system—it allows programs to easily save and restore entire Python objects to files and file-like objects. For more traditional database demands, there are Python interfaces to Sybase, Oracle, Informix, ODBC, MySQL, and more. The Python world has also defined a portable database API for accessing SQL database systems from Python scripts, which looks the same on a variety of underlying database systems.
Program portability Most Python programs run unchanged on all major computer platforms. Porting Python code between Unix and Windows, for example, is usually just a matter of copying a script's code between machines. Moreover, Python offers multiple options for coding portable graphical user interfaces. Support libraries Python comes with a large collection of prebuilt and portable functionality, known as the standard library. This library supports an array of application-level programming tasks, from text pattern matching, to network scripting.
3. 4. 5. 1. 2. 3. 4. 5. 6. 7. 8. 6. 1. 2. 3. References and Garbage Collection 5. 1. 1. 2. 3. 4. 5. 2. 1. 2. 3. 4. 3. 1. 4. 1. 2. 3. 5. 1. 2. Mutable Types Can Be Changed in-Place 6. 1. 2. 1. 2. 3. 3. 4. 1. 2. 3. 4. 5. Dictionary Usage Notes 7. 1. 1. Why Lists and Tuples? 2. 1. 3. 4. 5. 6. 7. 8. 9. 1. 2. 3. 4. 10. Part II Exercises III. Statements and Syntax 8. 1. 1. 2. 2. 3. 1. 2. Redirecting the Output Stream 9. 1. 1. 2. 2. 1. 2. 3. 3. Truth Tests 10. 1. 1. 2. 2. 1. 2. 3. 3. 1. 2. 4. 1. 2. 3.