code: def create(self,*fields,**kw):
          
          self.mode = mode = kw.get("mode",None)
          if self._table_exists():
              if mode == "override":
                  self.cursor.execute("DROP TABLE %s" %self.name)
              elif mode == "open":
                  return self.open()
              else:
                  raise IOError,"Base %s already exists" %self.name
          self.fields = []
          self.field_info = {}
          sql = "CREATE TABLE %s (" %self.name
          for field in fields:
              sql += self._validate_field(field)
              sql += ','
          sql = sql[:-1]+')'
          self.cursor.execute(sql)
          self._get_table_info()
          return self
docs: Create a new table
          For each field, a 2-element tuple is provided :
          - the field name
          - a string with additional information : field type +
            other information using the MySQL syntax
            eg : ('name','TEXT NOT NULL')
                 ('date','TIMESTAMP DEFAULT CURRENT_TIMESTAMP')
          A keyword argument mode can be specified ; it is used if a file
          with the base name already exists
          - if mode = 'open' : open the existing base, ignore the fields
          - if mode = 'override' : erase the existing base and create a
          new one with the specified fields