[sqlalchemy] Doc bug? 0.3 tutorial not working
Hi Michael et al. I don't know if this is a versioning conflict or what
not. I know I had done this fine before in the past, so maybe something
changed. Anyway, with sa 0.3.11 and python 2.4.3 and mysql 5.0.22,
following the sa 0.3 tutorial:
from sqlalchemy import *
db = create_engine('mysql://web:[EMAIL PROTECTED]/db_name')
metadata = MetaData()
metadata.bind(db)
TypeError: 'NoneType' object is not callable
However this still works:
metadata = MetaData(db)
The tutorial still says the two are equivalent, so I guess something's
fishy?
Thanks
Iain
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[sqlalchemy] Re: Doc bug? 0.3 tutorial not working
On Nov 17, 2007, at 4:27 AM, iain duncan wrote:
Hi Michael et al. I don't know if this is a versioning conflict or
what
not. I know I had done this fine before in the past, so maybe
something
changed. Anyway, with sa 0.3.11 and python 2.4.3 and mysql 5.0.22,
following the sa 0.3 tutorial:
from sqlalchemy import *
db = create_engine('mysql://web:[EMAIL PROTECTED]/db_name')
metadata = MetaData()
metadata.bind(db)
TypeError: 'NoneType' object is not callable
However this still works:
metadata = MetaData(db)
The tutorial still says the two are equivalent, so I guess something's
fishy?
the correct syntax is metadata.bind = db.Im not seeing
metadata.bind(db) anywhere ?
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[sqlalchemy] Re: Can I remove a Column from the select() result set
On Nov 17, 2007, at 12:26 AM, Matt Culbreth wrote: Howdy Group, Let's say I have a very simple query: select person.id, person.name, person.age from person Can I remove one of the columns, say person.age, from this result set and still use the list as a RowProxy? I'm trying to do it now and it's not working. I'm creating a new list and appending all but the last (for example) columns, but it's then missing the RowProxy goodness. I realize I can do this in the original select, but I'm doing some client-side logic here and I need to manipulate the dataset. well if you use list operations etc. on the RowProxy or ResultProxy youll get just a plain list (or dict, depending on what youre doing). within SA, we use a lot of decorator like approaches, not the python @decorator thing but rather another collection class that wraps the original RowProxy. you'd have to illustrate what you're specifically trying to do for us to have some suggestions. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~--~~~~--~~--~--~---
[sqlalchemy] Re: Doc bug? 0.3 tutorial not working
from sqlalchemy import *
db = create_engine('mysql://web:[EMAIL PROTECTED]/db_name')
metadata = MetaData()
metadata.bind(db)
TypeError: 'NoneType' object is not callable
However this still works:
metadata = MetaData(db)
The tutorial still says the two are equivalent, so I guess something's
fishy?
the correct syntax is metadata.bind = db.Im not seeing
metadata.bind(db) anywhere ?
Well that's what I get for trying to stay up as late as my studying
girlfriend. My sincere apologies! :/
Sheepish Iain
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[sqlalchemy] Re: Can I remove a Column from the select() result set
Thanks Michael. To make a long story short, I'm appending a couple columns onto a query, running it, and then using those two extra columns for some client-side logic (involving calculations to be precise). At the end of that logic, I need to remove those two extra columns. I'd like to be able to do that and keep the RowProxy stuff. There's a workaround though so it's not a big deal. I've looked through the code and it seems I'd be going too far outside of the core design to keep doing this. On Nov 17, 11:03 am, Michael Bayer [EMAIL PROTECTED] wrote: On Nov 17, 2007, at 12:26 AM, Matt Culbreth wrote: Howdy Group, Let's say I have a very simple query: select person.id, person.name, person.age from person Can I remove one of the columns, say person.age, from this result set and still use the list as a RowProxy? I'm trying to do it now and it's not working. I'm creating a new list and appending all but the last (for example) columns, but it's then missing the RowProxy goodness. I realize I can do this in the original select, but I'm doing some client-side logic here and I need to manipulate the dataset. well if you use list operations etc. on the RowProxy or ResultProxy youll get just a plain list (or dict, depending on what youre doing). within SA, we use a lot of decorator like approaches, not the python @decorator thing but rather another collection class that wraps the original RowProxy. you'd have to illustrate what you're specifically trying to do for us to have some suggestions. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~--~~~~--~~--~--~---
