The MaltParser interface in older versions of NLTK is used to hard-code the model path. This has been committed to commit e9e443 . Now you can do the following:
maltparser = MaltParser(mco="/path/to/your/model.mco")
easy_install pip - NLTK, (2.0.1rc4). , :
maltparser = MaltParser()
maltparser.mco = "/path/to/your/model.mco"
MaltParser.