Hi,

First you need to do the following import in models.py file:

from openerp.tools.translate import _

Then to each messages or field labels which you want to translate, do the following:

for eg:

avg_price = fields.Float(compute='_compute_avg_price', string=_('Avg price'))

That means put the messages in _('your message here')

Then generate the .po file. You can see those messages and give corresponding translation texts.