By Zed A. Shaw
This can be a very newbie ebook for those that are looking to discover ways to code. when you can already code then the booklet will most likely force you insane. It's meant for those that don't have any coding chops to accumulate their abilities ahead of beginning a extra specific ebook. The 2d version gains five new workouts, fixes and updates to almost each workout, and 3 of the recent routines educate you to create an easy net software because the ultimate a part of the publication.
Read or Download Learn Python the Hard Way (2nd Edition) PDF
Best python books
Essential SQLAlchemy introduces a high-level open-source code library that makes it more straightforward for Python programmers to entry relational databases comparable to Oracle, DB2, MySQL, PostgreSQL, and SQLite. SQLAlchemy has turn into more and more well known considering the fact that its liberate, however it nonetheless lacks strong offline documentation. This useful e-book fills the distance, and since a developer wrote it, you get an target examine SQLAlchemy's instruments instead of an advocate's description of all of the "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 present Python code. crucial SQLAlchemy demonstrates easy methods to use the library to create an easy database program, walks you thru basic queries, and explains the right way to use SQLAlchemy to hook up with a number of databases at the same time with an analogous Metadata. you furthermore mght find out how to:
* Create customized varieties for use on your schema, and while it's important 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 energetic list styles utilized in different ORMs
* Create gadgets, store them to a consultation, and flush them to the database
* Use SQLAlchemy to version item orientated inheritance
* supply a declarative, lively 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 whilst 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 e-book takes an "essentials" procedure that offers you precisely what you must turn into efficient with SQLAlchemy correct away.
Regular expressions are a very robust device for manipulating textual content and information. they're now ordinary good points in quite a lot of languages and renowned instruments, together with Perl, Python, Ruby, Java, VB. internet and C# (and any language utilizing the . web Framework), Hypertext Preprocessor, and MySQL.
should you don't use common expressions but, you'll find during this e-book a complete new global of mastery over your information. in the event you already use them, you'll savor this book's exceptional element and breadth of assurance. in the event you imagine you recognize all you want to learn about typical expressions, this booklet is a gorgeous eye-opener.
As this booklet indicates, a command of normal expressions is a useful ability. normal expressions let you code complicated and refined textual content processing that you simply by no means imagined should be computerized. common expressions can prevent time and aggravation. they are often used to craft based ideas to quite a lot of difficulties. as soon as you've mastered ordinary expressions, they'll turn into a useful a part of your toolkit. you are going to ask yourself the way you ever received via with out them.
but regardless of their large availability, flexibility, and unprecedented energy, commonplace expressions are often underutilized. but what's strength within the palms of knowledgeable should be fraught with peril for the unwary. studying usual Expressions may help you navigate the minefield to changing into a professional and assist you optimize your use of standard expressions.
getting to know average Expressions, 3rd version, now contains a complete bankruptcy dedicated to Hypertext Preprocessor and its strong and expressive suite of normal expression services, as well as improved personal home page insurance within the valuable "core" chapters. in addition, this variation has been up-to-date all through to mirror advances in different languages, together with increased in-depth assurance of Sun's java. util. regex package deal, which has emerged because the general Java regex implementation. issues include:
* A comparability of positive factors between various 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 have, yet now not what you don't wish
* Sections and chapters on person languages
Written within the lucid, exciting tone that makes a posh, dry subject develop into crystal-clear to programmers, and sprinkled with recommendations to advanced real-world difficulties, gaining knowledge of average Expressions, 3rd version bargains a wealth info so you might positioned to instant use.
Reviews of this new version and the second one edition:
"There isn't a greater (or extra invaluable) e-book on hand on average expressions. "
--Zak Greant, coping with Director, eZ Systems
"A actual tour-de-force of a publication which not just covers the mechanics of regexes in impressive element but additionally talks approximately potency and using regexes in Perl, Java, and . internet. .. if you happen to 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 e-book to you. "
--Dr. Chris Brown, Linux Format
"The writer does a great activity major the reader from regex amateur to grasp. The publication is intensely effortless to learn and chock jam-packed with valuable and appropriate examples. .. usual expressions are helpful instruments that each developer must have of their toolbox. gaining knowledge of ordinary Expressions is the definitive consultant to the topic, and a superb 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 short creation to the language and its syntax, the booklet strikes fast into extra complicated programming themes, together with embedding Python, community programming, GUI toolkits, JPython, net improvement, Python/C API, and extra.
Python 201 is the sequel to my first e-book, Python one hundred and one. in case you already recognize the fundamentals of Python and now you must visit the subsequent point, then this can be the booklet for you! This publication is for intermediate point Python programmers simply. There will not be any newbie chapters the following. This e-book relies onPython three.
- Core Python Applications Programming (3rd Edition) (Core Series)
- Foundations of Python Network Programming (3rd Edition)
- Black Hat Python: Python Programming for Hackers and Pentesters
- ArcGIS Blueprints
Extra info for Learn Python the Hard Way (2nd Edition)
Python knows you want something to be a string when you put either " (double-quotes) or ’ (single-quotes) around the text. You saw this many times with your use of print when you put the text you want to go to the string inside " or ’ after the print. Then Python prints it. Strings may contain the format characters you have discovered so far. You simply put the formatted variables in the string, and then a % (percent) character, followed by the variable. The only catch is that if you want multiple formats in your string to print multiple variables, you need to put them inside ( ) (parenthesis) separated by , (commas).
Did you end the function call with a ) character. Use these two checklists on the remaining lessons until you do not need them anymore.
A string with a right side. $ Extra Credit 1. Go through this program and write a comment above each line explaining it. 2. Find all the places where a string is put inside a string. There are four places. 3. Are you sure there’s only four places? How do you know? Maybe I like lying. 4. Explain why adding the two string w and e with + makes a longer string. 26 Exercise 6: Strings And Text Exercise 7: More Printing Now we are going to do a bunch of exercises where you just type code in and make it run.