old_contents: 
  from django.db import connection
  from south.db import generic
  
  class DatabaseOperations(generic.DatabaseOperations):
  
      """
      MySQL implementation of database operations.
      """
  
      types = generic.DatabaseOperations.types
      types['datetime'] = "datetime"
  
      def rename_column(self, table_name, old, new):
          if old == new:
              return []
          
          qn = connection.ops.quote_name
          
          rows = [x for x in self.execute('DESCRIBE %s' % (qn(table_name),)) if x[0] == old]
          
          if not rows:
              raise ValueError("No column '%s' in '%s'." % (old, table_name))
          
          params = (
              qn(table_name),
              qn(old),
              qn(new),
              "%s %s %s %s %s" % (
                  rows[0][1],
                  rows[0][2] == "YES" and "NULL" or "NOT NULL",
                  rows[0][3] == "PRI" and "PRIMARY KEY" or "",
                  rows[0][4] and "DEFAULT %s" % rows[0][4] or "",
                  rows[0][5] or "",
              ),
          )
          self.execute('ALTER TABLE %s CHANGE COLUMN %s %s %s;' % params)
  
  
      def rename_table(self, old_table_name, table_name):
          """
          Renames the table 'old_table_name' to 'table_name'.
          """
          if old_table_name == table_name:
              # No Operation
              return
          qn = connection.ops.quote_name
          params = (qn(old_table_name), qn(table_name))
          self.execute('RENAME TABLE %s TO %s;' % params)
new_contents: 
  from django.db import connection
  from south.db import generic
  
  class DatabaseOperations(generic.DatabaseOperations):
  
      """
      MySQL implementation of database operations.
      """
  
      def rename_column(self, table_name, old, new):
          if old == new:
              return []
          
          qn = connection.ops.quote_name
          
          rows = [x for x in self.execute('DESCRIBE %s' % (qn(table_name),)) if x[0] == old]
          
          if not rows:
              raise ValueError("No column '%s' in '%s'." % (old, table_name))
          
          params = (
              qn(table_name),
              qn(old),
              qn(new),
              "%s %s %s %s %s" % (
                  rows[0][1],
                  rows[0][2] == "YES" and "NULL" or "NOT NULL",
                  rows[0][3] == "PRI" and "PRIMARY KEY" or "",
                  rows[0][4] and "DEFAULT %s" % rows[0][4] or "",
                  rows[0][5] or "",
              ),
          )
          self.execute('ALTER TABLE %s CHANGE COLUMN %s %s %s;' % params)
  
  
      def rename_table(self, old_table_name, table_name):
          """
          Renames the table 'old_table_name' to 'table_name'.
          """
          if old_table_name == table_name:
              # No Operation
              return
          qn = connection.ops.quote_name
          params = (qn(old_table_name), qn(table_name))
          self.execute('RENAME TABLE %s TO %s;' % params)
subject: Remove failing mysql module