Thursday, November 8, 2012

Duck Typing Assert in Python

People who come from strongly typed languages that offer interfaces often are confused by lack of one in Python. Python, being dynamic typing programming language, follows duck typing principal. Here we will see how programmer can assert duck typing between two Python classes. Setup environment before proceed:
$ virtualenv env
$ env/bin/pip install wheezy.core
Let play a bit with duck test `looks like`. Place the following code snippet into file ``:
from wheezy.core.introspection import looks

class IFoo(object):
    def foo(self):

class Foo(object):
    def bar(self):

assert looks(Foo).like(IFoo)