Developing a billing system with Django

See the original posting on DZone Python

In the development of most services there is a need in the internal billing for service accounts. Our service (http://bitcalm.com) also had such a problem. We were not able to find ready-made packages for its solution and in the end had to develop a billing system from scratch.In this article I want to talk about our experiences and pitfalls encountered during development.
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