Re: [sqlalchemy] NoSuchColumnError happens when multiple processes concurrently access to a row with locking

2016-04-19 Thread Mike Bayer
step one is to make the behavior go away, then you can bisect versions of mysql-python (assuming that was the problem) to figure out the specific issue. Very little has happened with mysql-python between 1.2.3 and 1.2.5 so if that's where the problem is it wouldn't be very hard to figure out.

Re: [sqlalchemy] NoSuchColumnError happens when multiple processes concurrently access to a row with locking

2016-04-19 Thread Shingo Toda
Thank you very much for your quick response. I will try your suggestion. I just wonder if you know there is any bug fix e.g. identical commit log for this as, if possible, I want a kind of evidence that upgrading the driver could solve my problem. On Tuesday, April 19, 2016 at 10:56:06 PM UTC+9

[sqlalchemy] installation

2016-04-19 Thread ramneet singh
how to install sql alchemy and flask. i am new to databases and python. I need it urgently for an assignment. -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlal

Re: [sqlalchemy] [graphene] No inspection system is available for object of type

2016-04-19 Thread 刘邦瑞
Thank you so much! On Tuesday, April 19, 2016 at 9:58:40 AM UTC-4, Mike Bayer wrote: > > > this issue involves the use of graphene-specific APIs which are not part > of the SQLAlchemy project. You will have better luck asking the > maintainers of graphene directly. > > > On 04/19/2016 02:16 A

Re: [sqlalchemy] [graphene] No inspection system is available for object of type

2016-04-19 Thread Mike Bayer
this issue involves the use of graphene-specific APIs which are not part of the SQLAlchemy project. You will have better luck asking the maintainers of graphene directly. On 04/19/2016 02:16 AM, 刘邦瑞 wrote: Hi, I encountered this problem when I try to use Automap methods in Graphene. The

Re: [sqlalchemy] NoSuchColumnError happens when multiple processes concurrently access to a row with locking

2016-04-19 Thread Mike Bayer
On 04/18/2016 08:54 PM, Shingo Toda wrote: Hi all I am now seeing the SQLAlchemy raise 'NoSuchColumnError' occasionally when concurrent accesses happen with 'select for update'. My application uses * SQLAlchemy 0.8.4 * MySQL-python 1.2.3 * CentOS6.7 * python 2.6 * Mar