python - What's the difference between filter and filter_by in SQLAlchemy? -

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Do any difference in SQLAlchemy in any filter and filter_by function Can explain? I am confused and can not really see the difference, which one should I use?

filter_by is used for simple questions

db.users.filter_by (name = 'joe')

This way the filter can be completed with , of the quad , But instead using the '==' equality operator, which is overloaded on the db.users.name object:

db.users.filter (Db.users .name == 'Joe')

You can also write more powerful questions by using the filter Expressions:

db.users.filter (or_ (db.users.name == 'Ryan', db.users.country == 'England'))


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