encode.avapose.com |
||
.NET/Java PDF, Tiff, Barcode SDK Library>>> phonebook {'Beth': '9102', 'Alice': '2341', 'Cecil': '3258'} >>> "Cecil's phone number is %(Cecil)s." % phonebook "Cecil's phone number is 3258." Except for the added string key, the conversion specifiers work as before. When using dictionaries like this, you may have any number of conversion specifiers, as long as all the given keys are found in the dictionary. This sort of string formatting can be very useful in template systems (in this case using HTML): >>> template = '''<html> <head><title>%(title)s</title></head> <body> <h1>%(title)s</h1> <p>%(text)s</p> </body>''' >>> data = {'title': 'My Home Page', 'text': 'Welcome to my home page!'} >>> print template % data <html> <head><title>My Home Page</title></head> <body> <h1>My Home Page</h1> <p>Welcome to my home page!</p> </body> winforms pdf 417 reader, winforms qr code reader, winforms upc-a reader, winforms data matrix reader, winforms gs1 128, winforms ean 13 reader, itextsharp remove text from pdf c#, c# replace text in pdf, winforms code 39 reader, itextsharp remove text from pdf c#,ideal_sentences = ideal_sentences.select { |sentence| sentence =~ /is|are/ } 7 It uses the select method, as the stop word removal code in the previous section did. The expression in the code block uses a regular expression that matches against sentence, and only returns true if is or are are present within sentence. This means ideal_sentences now only contains sentences that are in the middle third length-wise and contain either is or are. The final line simply joins the ideal_sentences together with a full stop and space between them to make them readable: puts ideal_sentences.join(". ") a puzzle motif in the story template, the Point A headline might read, You re hearing con icting pieces of advice that leave you uncertain and the Point B headline might be Seeing the big picture will help you decide how to improve the returns. As shown in Figure 7-8, sketch three puzzle pieces on the upper-left Point A slide to visually refer to the con icting pieces. Sketch the pieces coming together on the upper-right Point B slide to form the big picture. So far your application has the filename text.txt hard-coded into it. This is acceptable, but it d be a lot nicer if you could specify, when you run the program, what file you want the analyzer to process. Just like the other built-in types, dictionaries have methods. While these methods can be very useful, you probably will not need them as often as the list and string methods. You might want to skim this section first to get a picture of which methods are available, and then come back later if you need to find out exactly how a given method works. Note This technique is only practical to demonstrate if you re running analyzer.rb from a command prompt or shell, as on Mac OS X or Linux (or Windows if you re using the Windows command prompt). If you re using an IDE on Windows, this section will be read-only for you. FIGURE 7-8 Two ways to sketch the pair of Point A and Point B slides. Top row: Introduce the motif of Typically, if you re starting a program from the command line, you can append parameters onto the end of the command and the program processes them. You can do the same with your Ruby application. Ruby automatically places any parameters that are appended to the command line when you launch your Ruby program into a special array called ARGV. To test it out, create a new script called argv.rb and use this code: puts ARGV.join('-') scattered puzzle pieces, and then show the pieces coming together to form a picture. Bottom row: The Point A slide shows a clipboard with empty check boxes, and the Point B slide shows the check boxes selected. From the command prompt, run the script like so: The clear method removes all items from the dictionary. This is an in-place operation (like list.sort), so it returns nothing (or, rather, None): >>> d = {} >>> d['name'] = 'Gumby' >>> d['age'] = 42 >>> d {'age': 42, 'name': 'Gumby'} The result will be blank, but then try to run it like so:
|
||