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How do I implement interfaces in python?

...interface, a module that is a part of the Zope Component Architecture, a really awesomely cool component framework. Here you don't subclass from the interfaces, but instead mark classes (or even instances) as implementing an interface. This can also be used to look up components from a component reg...
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How to set a single, main title above all the subplots with Pyplot?

...m using pyplot . I have 4 subplots. How to set a single, main title above all the subplots? title() sets it above the last subplot. ...
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Automatically plot different colored lines

...t several kernel density estimations on the same graph, and I want them to all be different colors. I have a kludged solution using a string 'rgbcmyk' and stepping through it for each separate plot, but I start having duplicates after 7 iterations. Is there an easier/more efficient way to do this,...
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Eclipse “Error: Could not find or load main class”

...s" -> "Java Application." once, and it will set the class path automatically. See Blamkin86's answer. Classpath settings may be found under "Run" -> "Run Configurations...". – gkubed Oct 2 '18 at 13:19 ...
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What's the best UI for entering date of birth? [closed]

...ry fast. For a not so advanced user I suggest using a datepicker. Since usually you also have advanced and non-advanced users I suggest a combination of text input and datepicker. share | improve th...
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How to replace a hash key with another key

...n't like "smart" ruby code because it takes some time to tell what it is really doing. Your solution is in other hand simple and descriptive. – Lucas Nov 13 '14 at 18:55 3 ...
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HTML select form with option to enter custom value

...e input, with a value of the id of the datalist. Update: As of March 2019 all major browsers (now including Safari 12.1 and iOS Safari 12.3) support datalist to the level needed for this functionality. See caniuse for detailed browser support. It looks like this: <input type="text" list="c...
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django models selecting single field

I have a table/models called Employees and I would like to get all rows of a single field as a queryset. 5 Answers ...
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Replace all non-alphanumeric characters in a string

... If you handle unicode a lot, you may also need to keep all non-ASCII unicode symbols: re.sub("[\x00-\x2F\x3A-\x40\x5B-\x60\x7B-\x7F]+", " ", ":%# unicode ΣΘΙП@./\n") – zhazha Jul 13 '16 at 7:43 ...
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What's the difference between lists and tuples?

.... A list on the other hand could be used to store multiple locations. Naturally one might want to add or remove locations from the list, so it makes sense that lists are mutable. On the other hand it doesn't make sense to add or remove items from an existing location - hence tuples are immutable. T...