Sqlalchemy existing database

Sqlalchemy existing db file

from sqlalchemy.ext.automap import automap_base
from sqlalchemy.orm import Session
from sqlalchemy import create_engine

Base = automap_base()

# engine, suppose it has two tables 'user' and 'address' set up
engine = create_engine("sqlite:///mydatabase.db")

# reflect the tables
Base.prepare(engine, reflect=True)

# mapped classes are now created with names by default
# matching that of the table name.
User = Base.classes.user
Address = Base.classes.address

session = Session(engine)

# rudimentary relationships are produced
session.add(Address(email_address="foo@bar.com", user=User(name="foo")))
session.commit()

# collection-based relationships are by default named
# "<classname>_collection"
print (u1.address_collection)

Source: stackoverflow.com

Similar codes

11 votes106 views5 answers
Laravel db facade
SQL
0 vote114 views1 answer
Drop view in mysql
SQL
0 vote112 views1 answer
Install squirrel sql ubuntu
SQL
1 vote115 views1 answer
Oracle enable job
SQL
0 vote135 views1 answer
Where to find pg_hba.conf in ubuntu
SQL
0 vote106 views1 answer
Postgresql create table many-to-many
SQL
0 vote109 views1 answer
Sql select rows between 1000 and 2000
SQL
1 vote161 views1 answer
Alter constraint postgres
SQL
5 votes109 views1 answer
How to get all dates in a month in oracle
SQL
1 vote106 views4 answers
Fatal database postgres does not exist
SQL