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How to mock an import

...importing A to get what you want: test.py: import sys sys.modules['B'] = __import__('mock_B') import A print(A.B.__name__) A.py: import B Note B.py does not exist, but when running test.py no error is returned and print(A.B.__name__) prints mock_B. You still have to create a mock_B.py where ...
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Safely override C++ virtual functions

...ake the compiler check if the function I declared in the derived class actually overrides a function in the base class? I would like to add some macro or something that ensures that I didn't accidentally declare a new function, instead of overriding the old one. ...
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decorators in the python standard lib (@deprecated specifically)

...r('always', DeprecationWarning) # turn off filter warnings.warn("Call to deprecated function {}.".format(func.__name__), category=DeprecationWarning, stacklevel=2) warnings.simplefilter('default', DeprecationWarning) # reset filter ...
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Lightweight XML Viewer that can handle large files [closed]

...useful as an editor, but it does a good job of displaying flat XML data as tables. There are tons of free editors that do XML syntax highlighting, including vim, emacs, scite, eclipse (J2EE edition), jedit, notepad++. For heavyweight XML features, like XPath support, XSLT editing and debugging, SO...
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How do I change the string representation of a Python class? [duplicate]

... functions. Json dumps treats the object as a dictionary, and will convert all keys to strs. – mchicago Mar 7 '14 at 12:14 add a comment  |  ...
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Open file in a relative location in Python

...n a subdirectory beneath where the script is actually located, you can use __file__ to help you out here. __file__ is the full path to where the script you are running is located. So you can fiddle with something like this: import os script_dir = os.path.dirname(__file__) #<-- absolute dir the...
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UICollectionView current visible cell index

... The method [collectionView visibleCells] give you all visibleCells array you want. Use it when you want to get - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{ for (UICollectionViewCell *cell in [self.mainImageCollection visibleCells]) { NSIndexP...
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Routes with Dash `-` Instead of Underscore `_` in Ruby on Rails

... there has to be a better and faster way to convert all routes that has undersore to hyphens – carbonr Mar 31 '13 at 17:59 ...
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Is calculating an MD5 hash less CPU intensive than SHA family functions?

...argez maintenant" link). The report is in French, but it is mostly full of tables and numbers, and numbers are international. The implemented hash functions do not include the SHA-3 candidates (except SHABAL) but I am working on it. ...
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Serializing class instance to JSON

...ps() only knows how to serialize a limited set of object types by default, all built-in types. List here: https://docs.python.org/3.3/library/json.html#encoders-and-decoders One good solution would be to make your class inherit from JSONEncoder and then implement the JSONEncoder.default() function...