Re: [sqlalchemy] automap_base with mapped class

2017-03-11 Thread Vijaya Sekar
Yeah I done it thank u mike

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http://www.sqlalchemy.org/

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Re: [sqlalchemy] automap_base with mapped class

2017-03-11 Thread mike bayer



On 03/11/2017 01:17 AM, Vijaya Sekar wrote:

from sqlalchemy.ext.automap import automap_base
from sqlalchemy import create_engine, MetaData
lists = ['employees','address']
engine = create_engine("sqlite:///chinook.db")
metadata = MetaData()
metadata.reflect(engine, only=lists)
Base = automap_base(metadata=metadata)
Base.prepare()
User = Base.classes.employees


you can say:

list(Base.classes)[0]

but this is not an ordered dictionary so you can't be assured of what 
"0" is.


You have a list of names, why not use those?

User = Base.classes[lists[0]]










In the above How can i achieve mapping the classes without mention the class 
explicitly.

i.e User = Base.classes.employees

How can achieve same result by using the lists[0]

--
SQLAlchemy -
The Python SQL Toolkit and Object Relational Mapper

http://www.sqlalchemy.org/

To post example code, please provide an MCVE: Minimal, Complete, and
Verifiable Example. See http://stackoverflow.com/help/mcve for a full
description.
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SQLAlchemy - 
The Python SQL Toolkit and Object Relational Mapper


http://www.sqlalchemy.org/

To post example code, please provide an MCVE: Minimal, Complete, and Verifiable 
Example.  See  http://stackoverflow.com/help/mcve for a full description.
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[sqlalchemy] automap_base with mapped class

2017-03-10 Thread Vijaya Sekar


from sqlalchemy.ext.automap import automap_base
from sqlalchemy import create_engine, MetaData
lists = ['employees','address']
engine = create_engine("sqlite:///chinook.db")
metadata = MetaData()
metadata.reflect(engine, only=lists)
Base = automap_base(metadata=metadata)
Base.prepare()
User = Base.classes.employees



In the above How can i achieve mapping the classes without mention the class 
explicitly.

i.e User = Base.classes.employees

How can achieve same result by using the lists[0]

-- 
SQLAlchemy - 
The Python SQL Toolkit and Object Relational Mapper

http://www.sqlalchemy.org/

To post example code, please provide an MCVE: Minimal, Complete, and Verifiable 
Example.  See  http://stackoverflow.com/help/mcve for a full description.
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