Sqlalchemy if table does not exist

Question

I wrote a module which is to create an empty database file

def create_database():
    engine = create_engine(\"sqlite:///myexample.db\", echo=True)
    metadata          


        

Answer 1

Note that in 'Base.metadata' documentation it states about create_all:

Conditional by default, will not attempt to recreate tables already present in the target database.

And if you can see that create_all takes these arguments: create_all(self, bind=None, tables=None, checkfirst=True), and according to documentation:

Defaults to True, don't issue CREATEs for tables already present in the target database.

So if I understand your question correctly, you can just skip the condition.