def _guess_migration(self, prefix):
prefix = Migration.strip_filename(prefix)
matches = [m for m in self if m.name().startswith(prefix)]
if len(matches) == 1:
return matches[0]
elif len(matches) > 1:
raise exceptions.MultiplePrefixMatches(prefix, matches)
else:
raise exceptions.UnknownMigration(prefix, None)
def migration(self):
"Tries to load the actual migration module"
full_name = self.full_name()
try:
migration = sys.modules[full_name]
except KeyError:
try:
migration = __import__(full_name, '', '', ['Migration'])
except ImportError, e:
raise exceptions.UnknownMigration(self, sys.exc_info())
except Exception, e:
raise exceptions.BrokenMigration(self, sys.exc_info())
def migration(self):
"Tries to load the actual migration module"
full_name = self.full_name()
try:
migration = sys.modules[full_name]
except KeyError:
try:
migration = __import__(full_name, {}, {}, ['Migration'])
except ImportError as e:
raise exceptions.UnknownMigration(self, sys.exc_info())
except Exception as e:
raise exceptions.BrokenMigration(self, sys.exc_info())
# Override some imports
migration._ = lambda x: x # Fake i18n
migration.datetime = datetime_utils
return migration
