The fields are Float so they must return a float. (grafted from 68824d0fd7e6b7568db499d0a6594476c7f9ab66) --HG-- branch : 7.0
############### Purchase Module ############### The *Purchase Module* provides everything that is required to create and manage purchases made by the company. It adds the idea of a purchase to Tryton, and allows it to be tracked as it moves through various states from draft to done. It makes it easy to create supplier shipments for the purchase, and includes the ability to automatically create related supplier invoices. .. toctree:: :maxdepth: 2 usage/index design releases