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Proper way to declare custom exceptions in modern Python?

...eption(Exception): pass Again, the problem with the above is that in order to catch it, you'll either have to name it specifically (importing it if created elsewhere) or catch Exception, (but you're probably not prepared to handle all types of Exceptions, and you should only catch exceptions y...
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What is the best way to implement nested dictionaries?

...': {}}}}} And as the last line shows, it pretty prints beautifully and in order for manual inspection. But if you want to visually inspect your data, implementing __missing__ to set a new instance of its class to the key and return it is a far better solution. Other alternatives, for contrast: dict...
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What does “Memory allocated at compile time” really mean?

... a few bytes. Declaring it with an initial value that is non-zero will (in order to hold that initial value). Rather, the linker simply adds this 1KB amount to the memory requirement that the system's loader creates for you immediately prior to execution. ...
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Better explanation of when to use Imports/Depends

...epending on mgcv, the function found by calls to gam() would depend on the order in which they those two packages were attached. Not good. An "Imports" directive should be used for any supporting package whose functions are to be placed in <imports:packageName> (searched immediately after &lt...
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Is there a way to instantiate objects from a string holding their class name?

...ram termination) // because we can't guarantee correct destruction order if(!map) { map = new map_type; } return map; } private: static map_type * map; }; template<typename T> struct DerivedRegister : BaseFactory { DerivedRegister(std::string const&amp...
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Difference between 3NF and BCNF in simple terms (must be able to explain to an 8-year old)

...ypes: one type of cheese one type of meat one type of vegetable So we order two pizzas and choose the following toppings: Pizza Topping Topping Type -------- ---------- ------------- 1 mozzarella cheese 1 pepperoni meat 1 olives vegetable 2 mozzarell...
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Named colors in matplotlib

...as mentioned in a comment above to get a color list sorted in columns. The order is not identical to how I would sort by eye, but I think it gives a good overview. I updated the image and code to reflect that 'rebeccapurple' has been added and the three sage colors have been moved under the 'xkcd:'...
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How can I upload fresh code at github?

... Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Editing in the Chrome debugger

...right-click it and a menu will appear: click Save and save it locally. In order to view the diff or revert your changes, right-click and select the option Local Modifications... from the menu. You will see your changes diff with respect to the original file if you expand the timestamp shown. More ...
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Lombok annotations do not compile under Intellij idea [duplicate]

... In order to solve the problem set: Preferences (Ctrl + Alt + S) Build, Execution, Deployment Compiler Annotation Processors Enable annotation processing Make sure you have the Lombok plugin for IntelliJ installed...