🚀 go-pugleaf

Mam problem z nastepujacym kodem...

  1 from pysqlite2 import dbapi2 as sqlite
  2 import os, sys
  3
  4 mypath = os.path.dirname(os.path.abspath(__file__))
  5 databasedir = os.path.join(mypath, 'a.db')
  6
  7
  8 class DataBase(object):
  9     databasedir = os.path.join( os.path.abspath(sys.argv[0]),
'brain.db')
 10
 11     def __init__(self):
 12         self.con = sqlite.connect(databasedir)
 13         self.cur = con.cursor()
 14
 15     def show_commands(self):
 16         self.cur.execute('SELECT command FROM knowledge')
 17         a = ''
 18         for output in self.cur.fetchall():
 19             a += output + ' | '
 20         return  a
 21
 22     def write_to(self, command, text):
 23         self.cur.execute('INSERT INTO knowledge (command, text)
VALUES (?, ?)', (command, text))
 24         self.con.commit()
 25
 26
 27 print ' *************************************\n'
 28 print mypath, '      ', databasedir
 29 print ' *************************************\n'
 30 print DataBase.show_commands()
 31 print ' *************************************\n'


Traceback (most recent call last):
  File "a.py", line 30, in ?
    print DataBase.show_commands()
TypeError: unbound method show_commands() must be called with DataBase
instance as first argument (got nothing instead)

Nie mam pojecia co z tym zrobic.