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我使用南8.4 Django的1.6.1和Python 3.3.2和遇到的南错误引入一个文本框时，模型：南语法错误
sources = models.TextField(default="{'users':0}")
南高兴地当我用空字符串替换字符串时迁移。 回溯：
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "C:\Python33\lib\site-packages\django\core\management\__init__.py", line 399, in execute_from
_command_line
utility.execute()
File "C:\Python33\lib\site-packages\django\core\management\__init__.py", line 392, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Python33\lib\site-packages\django\core\management\base.py", line 242, in run_from_argv
self.execute(*args, **options.__dict__)
File "C:\Python33\lib\site-packages\django\core\management\base.py", line 285, in execute
output = self.handle(*args, **options)
File "C:\Python33\lib\site-packages\south\management\commands\migrate.py", line 111, in handle
ignore_ghosts = ignore_ghosts,
File "C:\Python33\lib\site-packages\south\migration\__init__.py", line 220, in migrate_app
success = migrator.migrate_many(target, workplan, database)
File "C:\Python33\lib\site-packages\south\migration\migrators.py", line 254, in migrate_many
result = migrator.__class__.migrate_many(migrator, target, migrations, database)
File "C:\Python33\lib\site-packages\south\migration\migrators.py", line 329, in migrate_many
result = self.migrate(migration, database)
File "C:\Python33\lib\site-packages\south\migration\migrators.py", line 133, in migrate
result = self.run(migration, database)
File "C:\Python33\lib\site-packages\south\migration\migrators.py", line 114, in run
return self.run_migration(migration, database)
File "C:\Python33\lib\site-packages\south\migration\migrators.py", line 84, in run_migration
migration_function()
File "C:\Python33\lib\site-packages\south\migration\migrators.py", line 60, in <lambda>
return (lambda: direction(orm))
File "C:\Users\Johnson\Documents\Works\Django\timewatch\times\migrations\0007_auto__add_field_acti
vity_sources.py", line 14, in forwards
keep_default=False)
File "C:\Python33\lib\site-packages\south\db\sqlite3.py", line 38, in add_column
field.column: (self._column_sql_for_create(table_name, name, field, False), field_default)
File "C:\Python33\lib\site-packages\south\db\generic.py", line 47, in _cache_clear
return func(self, table, *args, **opts)
File "C:\Python33\lib\site-packages\south\db\sqlite3.py", line 113, in _remake_table
self._copy_data(table_name, temp_name, renames, added)
File "C:\Python33\lib\site-packages\south\db\sqlite3.py", line 149, in _copy_data
self.quote_name(src),
File "C:\Python33\lib\site-packages\south\db\generic.py", line 282, in execute
cursor.execute(sql, params)
File "C:\Python33\lib\site-packages\django\db\backends\util.py", line 69, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "C:\Python33\lib\site-packages\django\db\backends\util.py", line 53, in execute
return self.cursor.execute(sql, params)
File "C:\Python33\lib\site-packages\django\db\utils.py", line 99, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "C:\Python33\lib\site-packages\django\utils\six.py", line 490, in reraise
raise value.with_traceback(tb)
File "C:\Python33\lib\site-packages\django\db\backends\util.py", line 53, in execute
return self.cursor.execute(sql, params)
File "C:\Python33\lib\site-packages\django\db\backends\sqlite3\base.py", line 450, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: near "':0}'": syntax error
任何人都知道是什么导致了这个错误？
显示你'迁移forward'功能 –