Python derives a fair amount of expressiveness from the power it gives to library authors. A lot of this in turn comes from its dynamic implementation. As a li

Python derives a fair amount of expressiveness from the power it gives to library authors. A lot of this in turn comes from its dynamic implementation. As a library author you can write effective python at different levels. Some involve quite heavy meta-programming (jinja2, collections.namedtuple, django's ORM) and most users would never find this out.