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Is there a simple, elegant way to define singletons? [duplicate]

... I don't really see the need, as a module with functions (and not a class) would serve well as a singleton. All its variables would be bound to the module, which could not be instantiated repeatedly anyway. If you do wish to use a cla...
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List all indexes on ElasticSearch server?

I would like to list all indexes present on an ElasticSearch server. I tried this: 22 Answers ...
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How to list all functions in a Python module?

I have a python module installed on my system and I'd like to be able to see what functions/classes/methods are available in it. ...
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How to detect reliably Mac OS X, iOS, Linux, Windows in C preprocessor? [duplicate]

... Apple platform" #endif #elif __linux__ // linux #elif __unix__ // all unices not caught above // Unix #elif defined(_POSIX_VERSION) // POSIX #else # error "Unknown compiler" #endif The defined macros depend on the compiler that you are going to use. The _WIN64 #ifdef can be nes...
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Iterate over object attributes in python

...foo = 1 ... bar = 'hello' ... def func(self): ... return 'call me' ... >>> obj = Cls() calling dir on the object gives you back all the attributes of that object, including python special attributes. Although some object attributes are callable, such as methods. >>&...
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What does functools.wraps do?

... def with_logging(*args, **kwargs): print(func.__name__ + " was called") return func(*args, **kwargs) return with_logging then when you say @logged def f(x): """does some math""" return x + x * x it's exactly the same as saying def f(x): """does some math""" ...
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Class with Object as a parameter

... Table to be a new-style class (as opposed to "classic" class). In Python3 all classes are new-style classes, so this is no longer necessary. New style classes have a few special attributes that classic classes lack. class Classic: pass class NewStyle(object): pass print(dir(Classic)) # ['__doc__...
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Difference between String replace() and replaceAll()

What's the difference between java.lang.String 's replace() and replaceAll() methods, other than later uses regex? For simple substitutions like, replace . with / , is there any difference? ...
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How to get instance variables in Python?

Is there a built-in method in Python to get an array of all a class' instance variables? For example, if I have this code: ...
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Using logging in multiple modules

I have a small python project that has the following structure - 11 Answers 11 ...