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How can I implement a tree in Python?

...om object is sometimes just a guideline: If a class inherits from no other base classes, explicitly inherit from object. This also applies to nested classes. See Google Python Style Guide – Konrad Reiche Sep 27 '12 at 9:39 ...
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What's the difference between Cache-Control: max-age=0 and no-cache?

...onse no matter what. Maybe you'd want the SHOULD-revalidate behavior when baseball stats are generated in a page, but you'd want the MUST-revalidate behavior when you've generated the response to an e-commerce purchase. Although you're correct in your comment when you say no-cache is not supposed ...
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What's the difference between a Python module and a Python package?

... Any Python file is a module, its name being the file's base name without the .py extension. A package is a collection of Python modules: while a module is a single Python file, a package is a directory of Python modules containing an additional __init__.py file, to distinguish a ...
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Undo a particular commit in Git that's been pushed to remote repos

... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers. Draft saved Draft discarded ...
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Python argparse: Make at least one argument required

...e can be challenging sometime. There are multiple aspects of command line based program: good design of command line selecting/using proper parser argparse offers a lot, but restricts possible scenarios and can become very complex. With docopt things go much shorter while preserving readabilit...
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What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters?

...its encoding and even its data type, making it unusable with any non-TCHAR based API. Since its purpose is migration to wchar_t, which we've seen above isn't a good idea, there is no value whatsoever in using TCHAR. 1. Characters which are representable in wchar_t strings but which are not suppo...
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How to turn on (literally) ALL of GCC's warnings?

...int i) { return i+1; } ? I think -Weffc++ is too noisy to be useful, it's based on the outdated first edition of Effective C++ and warns about constructs which are perfectly valid C++ (and for which the guidelines changed in later editions of the book.) I don't want to be warned that I haven't init...
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Fastest way to serialize and deserialize .NET objects

...he fastest) general purpose serializer in .NET. If you need strings, just base-64 encode the binary. [XmlType] public class CT { [XmlElement(Order = 1)] public int Foo { get; set; } } [XmlType] public class TE { [XmlElement(Order = 1)] public int Bar { get; set; } } [XmlType] publi...
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Python circular importing?

...ght, any circular dependencies in the modules' top level code (such as the base classes of class declarations in your example) will be a problem. That is the sort of situation where jpmc's answer that you should refactor the module organization is probably 100% correct. Either move class B into modu...
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addEventListener not working in IE8

... I've opted for a quick Polyfill based on the above answers: //# Polyfill window.addEventListener = window.addEventListener || function (e, f) { window.attachEvent('on' + e, f); }; //# Standard usage window.addEventListener("message", function(){ /*...*/ }...