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

1 vote287 views1 answer
MYSQL HOT TO COUNT THE DURATION BETWEEN TWO DATES
SQL
1 vote320 views1 answer
Random name function in mysql for nvarchar
SQL
7 votes310 views3 answers
Select latest entry in sql table
SQL
-1 vote333 views1 answer
Brisanje dupliranih konatakata
SQL
0 vote278 views1 answer
Mysql earlier than date
SQL
0 vote314 views1 answer
Psql generate id in existing database
SQL
8 votes322 views1 answer
Racle create auto increment column
SQL
2 votes330 views1 answer
Mysql id of inserted row
SQL
3 votes313 views1 answer
Postgres add not null to existing column
SQL
1 vote322 views1 answer
Date in where on datetime column clause mysql
SQL