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How to override the [] operator in Python?

...rwise this will happen: >>> myobj[5] = 1 Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: MyClass instance has no attribute '__setitem__' share | ...
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Extract traceback info from an exception object

...ion("foo occurred").with_traceback(tracebackobj) These features are minimally described as part of the raise documentation. All credit for this part of the answer should go to Vyctor, who first posted this information. I'm including it here only because this answer is stuck at the top, and Python...
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Static files in Flask - robot.txt, sitemap.xml (mod_wsgi)

... achieved.) it's not clean to add static files into the app root folder finally, the proposed solution looks much cleaner than the adding middleware approach: share | improve this answer |...
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Why would one use the Publish/Subscribe pattern (in JS/jQuery)?

... It’s all about loose coupling and single responsibility, which goes hand to hand with MV* (MVC/MVP/MVVM) patterns in JavaScript which are very modern in the last few years. Loose coupling is an Object-oriented principle in which ...
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JRE 1.7 - java version - returns: java/lang/NoClassDefFoundError: java/lang/Object

... This problem stems from an improper Java installation. Possibility 1 NOTE: This scenario only applies to Java 8 and prior. Beginning with Java 9, the JRE is structured differently. rt.jar and friends no longer exist, and Pack200 is no longer used. The Java standa...
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Undocumented NSURLErrorDomain error codes (-1001, -1003 and -1004) using StoreKit

... All error codes are on "CFNetwork Errors Codes References" on the documentation (link) A small extraction for CFURL and CFURLConnection Errors: kCFURLErrorUnknown = -998, kCFURLErrorCancelled = -999, kCFURLErrorBadU...
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Run certain code every n seconds [duplicate]

... This seems not to resolve the question at all... it does not repeat every second. – Yan King Yin Jul 5 '13 at 15:28 9 ...
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Multiple Models in a single django ModelForm?

... But how? Usually a FormView only has a single form_class assigned to it. – erikbwork Oct 7 '16 at 17:42 ...
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What's the $unwind operator in MongoDB?

...hat it stores your data is in the form of documents and collections, which allows for a dynamic means of adding and obtaining the data from your storage locations. That being said, in order to understand the concept behind the $unwind parameter, you first must understand what the use case that you ...
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Algorithm to detect corners of paper sheet in photo

...n are awesome, move to them as soon as possible. :D Instead of removing small objects and or noise, lower the canny restraints, so it accepts more edges, and then find the largest closed contour (in OpenCV use findcontour() with some simple parameters, I think I used CV_RETR_LIST). might still stru...