A ChainMap is a class from the collections module that provides the ability to link multiple mappings together such that they end up being a single unit. If you look at the documentation, you will notice that it accepts *maps, which means that a ChainMap will accept any number of mappings or dictionaries and turn …
Python fairly recently added partial support for function overloading in Python 3.4. They did this by adding a neat little decorator to the functools module called singledispatch. This decorator will transform your regular function into a single dispatch generic function. Note however that singledispatch only happens based on the first argument’s type. Let’s take a …
Python 3 – Function Overloading with singledispatch Read More »
The other day, I came across this interesting experimental package called import_from_github_com. The package uses the new import hooks provided in PEP 302 to basically allow you to import a package from github. What the package actually appears to do is install the package and add it to locals. Anyway, you need Python 3.2 or …
Python 3.5 added an interesting new library called typing. This adds type hinting to Python. Type hinting is kind of declaring your functions arguments to have a certain type. However the type hinting is not binding. It’s just a hint, so there’s nothing preventing the programmer from passing something they shouldn’t. This is Python after …
It’s almost the end of January already and PyCon USA 2011 is just around the corner. In this edition, we cover a wide variety of topics, from Python 2.7 – 3.x. We’ve got sprints, new books, web-related projects and good old recursion articles. Come one, come all! Read the news of the week! eWeek reports …