Best way to do enum in Sqlalchemy?

Question

I\'m reading about sqlalchemy and I saw following code:

employees_table = Table(\'employees\', metadata,
    Column(\'employee_id\', Integer, primary_key=Tru         


        

Answer 1

I'm not really knowledgeable in SQLAlchemy but this approach by Paulo seemed much simpler to me.
I didn't need user-friendly descriptions, so I went with it.

Quoting Paulo (I hope he doesn't mind my reposting it here):

Python’s namedtuple collection to the rescue. As the name implies, a namedtuple is a tuple with each item having a name. Like an ordinary tuple, the items are immutable. Unlike an ordinary tuple, an item’s value can be accessed through its name using the dot notation.

Here is a utility function for creating a namedtuple:

from collections import namedtuple

def create_named_tuple(*values):
     return namedtuple('NamedTuple', values)(*values)

The * before the values variable is for “unpacking” the items of the list so that each item is passed as an individual argument to the function.

To create a namedtuple, just invoke the above function with the needed values:

>>> project_version = create_named_tuple('alpha', 'beta', 'prod')
NamedTuple(alpha='alpha', beta='beta', prod='prod')

We can now use the project_version namedtuple to specify the values of the version field.

class Project(Base):
     ...
     version = Column(Enum(*project_version._asdict().values(), name='projects_version'))
     ...

This works great for me and is so much simpler than the other solutions that I previously found.