By Kenneth A. Lambert
In basics OF PYTHON: FROM FIRST courses via facts buildings, Washington and Lee college professor Kenneth A. Lambert provides all the vital subject matters in CS1 and CS2 in a single quantity. This low-budget structure presents teachers with a constant method of instructing introductory programming and information buildings over a typical two-term direction series. The ebook makes use of the Python programming language, that's either effortless to benefit for novices and scales good to complicated functions.
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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 develop into more and more renowned for the reason that its free up, however it nonetheless lacks strong offline documentation. This useful ebook fills the space, 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 allows you to map "plain previous Python objects" (POPOs) to database tables with no considerably altering your latest Python code. crucial SQLAlchemy demonstrates find out how to use the library to create an easy database software, walks you thru basic queries, and explains easy methods to use SQLAlchemy to hook up with a number of databases at the same time with a similar Metadata. you furthermore may find out how to:
* Create customized kinds for use on your schema, and whilst it's important to take advantage of customized instead of integrated varieties
* 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 gadgets, keep them to a consultation, and flush them to the database
* Use SQLAlchemy to version item orientated inheritance
* supply a declarative, lively list 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 learn the way and whilst to take advantage of 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 publication takes an "essentials" technique that provides you precisely what you must develop into efficient with SQLAlchemy correct away.
Regular expressions are a really strong instrument for manipulating textual content and knowledge. they're now typical beneficial properties in a variety of languages and renowned instruments, together with Perl, Python, Ruby, Java, VB. internet and C# (and any language utilizing the . internet Framework), personal home page, and MySQL.
if you happen to don't use general expressions but, you will find during this booklet a complete new global of mastery over your information. if you happen to already use them, you'll savour this book's unparalleled aspect and breadth of insurance. in the event you imagine you recognize all you must learn about usual expressions, this booklet is a beautiful eye-opener.
As this publication exhibits, a command of normal expressions is a useful ability. normal expressions let you code advanced and refined textual content processing that you simply by no means imagined should be computerized. ordinary expressions can prevent time and aggravation. they are often used to craft dependent recommendations to quite a lot of difficulties. as soon as you've mastered commonplace expressions, they'll develop into a useful a part of your toolkit. you are going to ask yourself the way you ever acquired by way of with out them.
but regardless of their huge availability, flexibility, and unprecedented energy, general expressions are often underutilized. but what's strength within the palms of a professional should be fraught with peril for the unwary. studying typical Expressions may also help you navigate the minefield to changing into knowledgeable and assist you optimize your use of standard expressions.
gaining knowledge of general Expressions, 3rd variation, now features a complete bankruptcy dedicated to personal home page and its robust and expressive suite of standard expression features, as well as improved personal home page assurance within the valuable "core" chapters. additionally, this version has been up to date all through to mirror advances in different languages, together with increased in-depth insurance of Sun's java. util. regex package deal, which has emerged because the ordinary Java regex implementation. issues include:
* A comparability of beneficial properties between various models of many languages and instruments
* How the ordinary expression engine works
* Optimization (major rate reductions on hand 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, interesting tone that makes a fancy, dry subject turn into crystal-clear to programmers, and sprinkled with options to advanced real-world difficulties, gaining knowledge of ordinary Expressions, 3rd variation bargains a wealth details that you should placed to quick use.
Reviews of this re-creation and the second one edition:
"There isn't a greater (or extra important) publication on hand on normal expressions. "
--Zak Greant, coping with Director, eZ Systems
"A genuine tour-de-force of a publication which not just covers the mechanics of regexes in awesome aspect but additionally talks approximately potency and using regexes in Perl, Java, and . web. .. if you happen to use commonplace expressions as a part of your specialist paintings (even should you have already got an excellent ebook on no matter what language you're programming in) i'd strongly suggest this booklet to you. "
--Dr. Chris Brown, Linux Format
"The writer does an excellent activity prime the reader from regex beginner to grasp. The publication is very effortless to learn and chock jam-packed with necessary and correct examples. .. standard expressions are invaluable instruments that each developer must have of their toolbox. gaining knowledge of average Expressions is the definitive consultant to the topic, and a great source that belongs on each programmer's bookshelf. Ten out of Ten Horseshoes. "
--Jason Menard, Java Ranch
The Python Developer's instruction manual is designed to show skilled builders to Python and its makes use of. starting with a quick creation to the language and its syntax, the ebook strikes speedy into extra complex 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 booklet, Python a hundred and one. in case you already comprehend the fundamentals of Python and now you need to visit the subsequent point, then this can be the ebook for you! This e-book is for intermediate point Python programmers merely. There will not be any newbie chapters right here. This booklet relies onPython three.
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Extra resources for Fundamentals of Python: From First Programs through Data Structures
Not only did Microsoft receive a fee for each computer sold, but it also was able to get a head start on supplying applications software that would run on its operating system. Brisk sales of the IBM PC and its “clones” to individuals and institutions quickly made MS-DOS the world’s most widely used operating system. Within a few years, Gates and Allen had become billionaires, and within a decade, Gates had become the world’s richest man, a position he held for 13 straight years. S. Government began to support the development of a network that would connect computers at military installations and research universities.
The CPU executes an algorithm by fetching its binary instructions from memory, decoding them, and executing them. Executing an instruction might involve fetching other binary information—the data—from memory as well. 2 The Structure of a Modern Computer System  C6840_01 11/19/08 11:41 AM Page 8 The processor can locate data in a computer’s primary memory very quickly. However, these data exist only as long as electric power comes into the computer. If the power fails or is turned off, the data in primary memory are lost.
Anyone with the appropriate training and resources—companies, government, nonprofit organizations, and private individuals—can start up a new Web server or obtain space on one. Web browser software now runs not only on desktop and laptop computers, but on handheld devices such as cell phones. This concludes our not-so-brief overview of the history of computing. If you want to learn more about this history, consult the sources listed at the end of this chapter. We now turn to an introduction to programming in Python.