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Why does python use 'else' after for and while loops?

...to seasoned Python coders. When used in conjunction with for-loops it basically means "find some item in the iterable, else if none was found do ...". As in: found_obj = None for obj in objects: if obj.key == search_key: found_obj = obj break else: print('No object found.') ...
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Is it possible to install another version of Python to Virtualenv?

I have a shared account in a web-hosting that has Python 2.4 installed, but my code is not compatible with 2.4. Is it possible to install Python 2.6 directly to Virtualenv? ...
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How to read a CSV file into a .NET Datatable

...ns values, so coming up with a regex that would split the line was kinda challenging. The OleDbProvider inferred the schema correctly. – Galilyou Jan 14 '12 at 10:41 ...
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How to get div height to auto-adjust to background size?

How do I get a div to automatically adjust to the size of the background I set for it without setting a specific height (or min-height) for it? ...
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Is there a difference between “throw” and “throw ex”?

...w ex resets the stack trace Coming from Method 1 and propogates it to the caller(Main) throw ex; } } private static void Method1() { try { throw new Exception("Inside Method1"); } catch (Exception) { throw; } } ...
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Streaming via RTSP or RTP in HTML5

... Technically 'Yes' (but not really...) HTML 5's <video> tag is protocol agnostic—it does not care. You place the protocol in the src attribute as part of the URL. E.g.: <video src="rtp://myserver.com/path/to/stream"> ...
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How do I keep two side-by-side divs the same height?

...: flex; /* equal height of the children */ } .col { flex: 1; /* additionally, equal width */ padding: 1em; border: solid; } <div class="row"> <div class="col">Lorem ipsum dolor sit amet, consectetur adipisicing elit.</div> <div class="col">Lorem ipsum dolor sit...
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codestyle; put javadoc before or after annotation?

... private method. Replaced by * {@link #remove(int)} and {@link #removeAll()} */ @Deprecated public synchronized void delItems(int start, int end) { ... } share | improve this answer ...
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express throws error as `body-parser deprecated undefined extended`

In my node app, I am using express. all works fine, But i am getting error in the cmd . I use all are updated modules... 6...
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Can I use an OR in regex without capturing what's enclosed?

... Depending on the regular expression implementation you can use so called non-capturing groups with the syntax (?:…): ((?:a|b)c) Here (?:a|b) is a group but you cannot reference its match. So you can only reference the match of ((?:a|b)c) that is either ac or bc. ...