... just like a stack of plates You can put plates on top, and you can remove plates from the top The last one you put into the stack is the first one to be removed (This principle is called last-in, ... to use a deque from the collections module See Chapter 10 for more information remove The remove method is used to remove the first occurrence of a value: >>> x = [ 'to' , 'be', 'or', 'not', 'to' , ... same thing will happen if you have stored 'Gumby' and the user writes 'gumby', or even 'GUMBY' A solution to this is to convert all names to lowercase both when storing and searching The code would...
... n this chapter, you learn how to group statements into functions, which enables you to tell the computer how to something, and to tell it only once You won’t need to give it the same detailed ... stores names and that allows you to look up people by their first, middle, or last names You might use a data structure like this: storage = {} storage['first'] = {} storage['middle'] = {} storage['last'] ... name-storing program (described in the section “Why Would I Want to Modify My Parameters?” earlier in this chapter), you can store only one name at a time It would be nice to be able to store...
... simple_generator >>> simple_generator() The iterator returned by the generator-function can be used just like any other iterator Generator ... In this section, I go into some more detail I cover only one magic method, iter , which is the basis of the iterator protocol The Iterator Protocol To iterate means to repeat something several ... require an object to belong to a certain class or to implement a certain interface, Python often simply requires it to follow some given protocol So, to be a sequence, all you have to is follow the...
... Editor", size=(410, 335)) bkg = wx.Panel(win) loadButton = wx.Button(bkg, label='Open') loadButton.Bind(wx.EVT_BUTTON, load) saveButton = wx.Button(bkg, label='Save') saveButton.Bind(wx.EVT_BUTTON, ... an event handler for loadButton as follows: loadButton.Bind(wx.EVT_BUTTON, load) This is pretty intuitive, isn’t it? I’ve linked a function to the button—when the button is clicked, the function ... >>> second'Second line\n' >>> third 'Third line\n' 273 274 CHAPTER 11 ■ FILES AND STUFF In this example, it’s important to note the following: • I’ve used print to write to the file This automatically...
... function from the same module Listing 14-8 A Simple Server Using Twisted from twisted.internet import reactor from twisted.internet.protocol import Protocol, Factory class SimpleLogger(Protocol): ... Improved Logging Server, Using the LineReceiver Protocol from twisted.internet import reactor from twisted.internet.protocol import Factory from twisted.protocols.basic import LineReceiver class SimpleLogger(LineReceiver): ... construct such protocol objects when a new connection arrives If you just want to create instances of a custom protocol class, you can use the factory that comes with Twisted, the Factory class in...
... and effort into the prototype It is probably better to refactor and modify that prototype into a more functional system, for several reasons One common problem that can occur is second system ... useful to be able to find out exactly how, say, the iter function works, but even more important is the ability to easily create a prototype of the program you are about to write, just to see ... easy to extend it to other markup languages You may not be able to reach these goals fully in the first version of your program, but that’s the point of the prototype, You write the prototype to...
... assigning to its attributes (top, bottom, left, right, topleft, topright, bottomleft, bottomright, size, width, height, center, centerx, centery, midleft, midright, midtop, and midbottom) or calling ... UnhandledQuery: history = history + [self.url] if len(history) >= MAX_HISTORY_LENGTH: raise return self._broadcast(query, history) def hello(self, other): """ Used to introduce the Node to other Nodes ... easy to add Useful Tools The only new tool you need in this project is Pygame, which you can download from the Pygame web site (http://pygame.org) To get Pygame to work in UNIX, you may need to...
... 2005 Express EditionFromNovicetoProfessional ■■■ Peter Wright 6226.book Page ii Tuesday, August 29, 2006 8:22 PM Beginning Visual Basic 2005 Express Edition: FromNovicetoProfessional Copyright ... Go button goButton Back button backButton Forward button forwardButton The WebBrowser control browser Perhaps the most important bit of code you need to write is the code that responds to the ... button to Top Right, which means it will always appear at its current location, in relation to the top-right corner of the form Finally, set the Anchor property for the browser control to Top,...
... for Developers FromNovicetoProfessional ■■■ Robin Dewson Dewson_958-7FRONT.fm Page ii Thursday, July 3, 2008 3:20 PM Beginning SQL Server 2008 for Developers: FromNovicetoProfessional Copyright ... soon find yourself moving from a beginner toward a competent and professional developer This book aims to cater to a wide range of developers, from those who prefer to use a graphical interface ... Johnston Copy Editor: Nicole Abramowitz Associate Production Director: Kari Brooks-Copony Production Editor: Ellie Fountain Compositor: Susan Glinert Proofreader: Nancy Sixsmith, ConText Editorial...
... through the snow to the university’s campus in order to use its powerful minicomputer, he wanted to be able to connect to it from home! He also wanted to have a platform to use to experiment with ... Beginning Ubuntu Linux FromNovicetoProfessional ■■■ Keir Thomas Thomas_6277Front.fm Page ii Tuesday, February 14, 2006 11:10 AM Beginning Ubuntu Linux: FromNovicetoProfessional Copyright ... the GNU tools, and Torvalds, with his kernel Many people refer to Linux as GNU/Linux This gives credit to the GNU Project that provided the majority of tools vital to making Linux into a usable...
... MySQL FromNoviceto Professional, SecondEdition ■■■ W Jason Gilmore Gilmore_552-1Front.fm Page ii Wednesday, December 21, 2005 3:05 PM Beginning PHP and MySQL 5: FromNoviceto Professional, Second ... the best-selling Beginning PHP and MySQL: FromNoviceto Professional, and, with coauthor Robert Treat, Beginning PHP and PostgreSQL 8: FromNovicetoProfessional These days Jason splits his ... HTML form into symbolic variables, encouraging exportation into other systems To accomplish this, he opted to continue development in C code rather than Perl Ongoing additions to the PHP toolset...
... Programming with VB 2005 FromNovicetoProfessional Daniel R Clark 5769chFM.qxd 10/13/05 4:21 PM Page ii Beginning Object-Oriented Programming with VB 2005: FromNovicetoProfessional Copyright ... Basic swelled It transitioned from being a prototyping tool to being a tool used to develop industrial-strength business applications Microsoft has always been committed to developing the Visual Basic ... two different objects to respond to the same request message in their own unique way For example, I could train my dog to respond to the command “bark” and my bird to respond to the command “chirp.”...
... ASP.NET 2.0 with VB.NET FromNovicetoProfessional Brian R Myers 5386fm_final.qxd 8/18/05 3:15 AM Page ii Beginning Object-Oriented ASP.NET 2.0 with VB.NET: FromNovicetoProfessional Copyright ... The Toolbox The left side area is called the Toolbox, shown in Figure 1-25 This has all of the controls that can be added to a form To add a control to a form, drag the control from the Toolbox ... points to the virtual directory (i.e., http://localhost/MyFirstWeApp) instead of having to type the URL for a specific web page The second advantage is that the virtual directory allows you to have...
... Beginning XML with C# 2008 FromNovicetoProfessional ■■■ Bipin Joshi Joshi_09973FRONT.fm Page ii Tuesday, June 17, 2008 2:50 PM Beginning XML with C# 2008: FromNovicetoProfessional Copyright ... version="1.0"?> Acme Inc. 12345 Star Wars Inc. 23456 Many ... into memory at once They essentially scan the document sequentially from top to bottom When they encounter various parts of the document, they raise events, and you can handle these events to...