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Python name mangling

...ible. If in doubt about whether a variable should be private or protected, it's better to go with private. 11 Answers ...
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Is arr.__len__() the preferred way to get the length of an array in Python?

...ust arrays of characters: my_string = 'hello world' len(my_string) # 11 It was intentionally done this way so that lists, tuples and other container types or iterables didn't all need to explicitly implement a public .length() method, instead you can just check the len() of anything that implemen...
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How to create a custom string representation for a class object?

...follow | edited Sep 6 at 11:51 Tomerikoo 7,22755 gold badges1818 silver badges3131 bronze badges ...
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Python: How do I make a subclass from a superclass?

... # Initialize using Parent # class MySubClass(MySuperClass): def __init__(self): MySuperClass.__init__(self) Or, even better, the use of Python's built-in function, super() (see the Python 2/Python 3 documentation fo...
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What is __pycache__?

... When you run a program in python, the interpreter compiles it to bytecode first (this is an oversimplification) and stores it in the __pycache__ folder. If you look in there you will find a bunch of files sharing the names of the .py files in your project's folder, only their extensi...
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Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4

...ned behaviour. And this means anything can happen, and discussing why does it happen under the rules of C++ doesn't make sense. C++11 draft N3337: §5.4:1 If during the evaluation of an expression, the result is not mathematically defined or not in the range of representable values for its t...
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How do I get the full path of the current file's directory?

...follow | edited Jan 11 at 15:46 answered Aug 7 '10 at 12:24 ...
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#define macro for debug printing in C?

... do { if (DEBUG) fprintf(stderr, fmt, __VA_ARGS__); } while (0) It assumes you are using C99 (the variable argument list notation is not supported in earlier versions). The do { ... } while (0) idiom ensures that the code acts like a statement (function call). The unconditional use of t...
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How to use Sphinx's autodoc to document a class's __init__(self) method?

Sphinx doesn't generate docs for __init__(self) by default. I have tried the following: 5 Answers ...
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Why use Abstract Base Classes in Python?

... implemented classes. Long version There is a contract between a class and its callers. The class promises to do certain things and have certain properties. There are different levels to the contract. At a very low level, the contract might include the name of a method or its number of parameters. I...