Many-to-one mapping (creating equivalence classes)

Question

I have a project of converting one database to another. One of the original database columns defines the row\'s category. This column should be mapped to a new category in t

Answer 1

If you want to have multiple keys pointing to the same value, i.e.

m_dictionary{('k1', 'k2', 'k3', 'k4'):1, ('k5', 'k6'):2} and access them as,

`print(m_dictionary['k1'])` ==> `1`.

Check this multi dictionary python module multi_key_dict. Install and Import it. https://pypi.python.org/pypi/multi_key_dict