[schema-evolution] global name 'set' is not defined

[guru_yaya@…]

I'm using schema evolution version of django installed from svn, on a shared hosting account on site5.com. I have allready installed svn version of django with no sql-schema support, and I got it running. Now when I try to add the chema evolution support, and then run sqncdb I get this error:

[03:57:23][ *myhomedir* @ pan:~/django_projects/pulmus]$ ./manage.py syncdb
Creating table auth_message
Creating table auth_group
Creating table auth_user
Creating table auth_permission
Creating table django_content_type
Creating table django_session
Creating table django_site
Creating table django_admin_log
Traceback (most recent call last):
  File "./manage.py", line 11, in ?
    execute_manager(settings)
  File "/home/myhomedir/lib/python2.3/django/core/management.py", line 1886, in execute_manager
    execute_from_command_line(action_mapping, argv)
  File "/home/myhomedir/lib/python2.3/django/core/management.py", line 1777, in execute_from_command_line
    action_mapping[action](int(options.verbosity), options.interactive)
  File "/home/myhomedir/lib/python2.3/django/core/management.py", line 713, in syncdb
    schema_fingerprint, introspected_upgrade, evolution = get_sql_evolution_detailed(app)
  File "/home/myhomedir/lib/python2.3/django/core/management.py", line 617, in get_sql_evolution_detailed
    output = schema_evolution.get_sql_evolution_check_for_dead_fields(klass, new_table_name)
  File "/home/myhomedir/lib/python2.3/django/core/schema_evolution.py", line 139, in get_sql_evolution_check_for_dead_fields
    suspect_fields = set(introspection.get_columns(cursor,db_table))
NameError: global name 'set' is not defined

anything you can do? I'm new to python, and I cannot figure it out mysqlf yet, sorry.

[guru_yaya@…]

A fix for schema evolution

[guru_yaya@…]

Hi guys.
As I said I'm just starting my way on python. I really don't know what the set function does. Yet on a quick look, it seem like my patch solves the problem.
Please test it properly, as I really had a wild guess more then proper debugging work.

[Russell Keith-Magee]

Just to clarify the status of schema-evolution - it is a branch that was created for a Google Summer of Code 2006 project that was undertaken by Derek Anderson. It is not being maintained or developed by any of the core developers. Based on the most recent discussions about the branch, it is not likely to be accepted for merging in its current form.

This ticket has been kept open in case Derek wants to address it. However, I don't know if he is paying any attention to the ticket tracker, or if he is even actively developing the branch any more.

[Fredrik Lundh <fredrik@…>]

I'm boldly closing this, for now; as russellm points out, this only applies when using an experimental branch with an old version of Python. If the branch will get merged, this will be handled by QA as part of compatibility testing (the patch is a standard 2.3 compatibility fix).

[derek]

i have pulled this fix into my local schema-evolution branch. it will be commited as soon as i finish my update from HEAD.