In RML or MAKO file of your report. The function "prueba2" would have called from it.

EDIT:

Try this in your new module.

from openerp.addons.purchase_requisition.report.requisition import requisition
if Service._services.has_key('report.purchase.requisition'):     # Removing existing report definition
    del Service._services['report.purchase.requisition']

class sale_recurring_orders_agreement(requisition):             # Inheriting original print parser class
    def __init__(self, cr, uid, name, context=None):
        super(sale_recurring_orders_agreement, self).__init__(cr, uid, name, context=context)
        self.localcontext.update({
            'time': time,
            'prueba': self.prueba,
        })

    def prueba(self):
        return 'A'

report_sxw.report_sxw('report.purchase.requisition', 'purchase.requisition', 'addons/purchase_requisition/report/purchase_requisition.rml', parser=sale_recurring_orders_agreement)
                                 # add print definition with new print parser

Hi atchuthan,

I just edited the post because the error is in "prueba" without the "2". The error is showing up without calling the function, it shows up as I place that code into the python file...

EDIT:

I JUST SOLVED IT, it was a problem with tabulation and spaces...