Jun 16, 2012 · There's the != (not equal) operator that returns True when two values differ, though be careful with the types because "1" != 1. This will always return True and "1" == 1 will always return …

An @ symbol at the beginning of a line is used for class and function decorators: PEP 318: Decorators Python Decorators - Python Wiki The most common Python decorators are: @property …

In Python this is simply =. To translate this pseudocode into Python you would need to know the data structures being referenced, and a bit more of the algorithm implementation. Some notes about …

Python slicing is a computationally fast way to methodically access parts of your data. In my opinion, to be even an intermediate Python programmer, it's one aspect of the language that it is necessary to …

Jan 17, 2013 · In Python 3.5 though, PEP 484 -- Type Hints attaches a single meaning to this: -> is used to indicate the type that the function returns. It also seems like this will be enforced in future versions …

Mar 16, 2017 · In Python 3, the iteration has to be over an explicit copy of the keys (otherwise it throws a RuntimeError) because my_dict.keys() returns a view of the dictionary keys, so any change to …

Aug 31, 2008 · See What do ** (double star/asterisk) and * (star/asterisk) mean in a function call? for the complementary question about arguments.

By "modern Python" I mean something that will run in Python 2.5 but be 'correct' for the Python 2.6 and Python 3.* way of doing things. And by "custom" I mean an Exception object that can include extra …

Sep 17, 2012 · For handling a few strings in separate variables, see How do I append one string to another in Python?. For the opposite process - creating a list from a string - see How do I split a …

How do I add a new key to an existing dictionary? It doesn't have an .add () method.