> There are thousands of units in use in sciences, commerce, engineering In the SI system, there are: 7 base SI standard units 22 named, derived standard units 14 alternative standard units of measure that are commensurate with one of the 29 base and derived units, and ~35 units (not symbols) that are defined, but not officially sanctioned and having potential lexicographical conflicts with other standard units ... for a total of 78 in the SI system.
The Imperial / US Customary carried over many very old-fashioned units of measure, including the "hand", but in many cases refrained from adopting "new" units (such as the Ampere, Coulomb, or Weber) that were being introduced into the SI system. So the total number of systems in the Imperial / US Customary system is about 80, most of which are completely out of use, and certainly not in use by anyone who regularly performs dimensional analysis. For instance, I don't think there would be much uproar if "teaspoons" were left out of any kind of implementation. So a comprehensive implementation of units would not require more than 160 units, and in reality, a "sufficient" implementation would need only 7. An exceptionally good implementation could probably be done with right around 100. _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/IMOSNNGGABG5EKWSLXQXD24FEZBZUBCX/ Code of Conduct: http://python.org/psf/codeofconduct/
