# This file is part of Tryton.  The COPYRIGHT file at the top level of
# this repository contains the full copyright notices and license terms.
from trytond.model import (
    Workflow, ModelSQL, ModelView, Unique, fields, sequence_ordered)
from trytond.wizard import (
    Button, StateAction, StateTransition, StateView, Wizard)
from trytond.modules.company import CompanyReport
from trytond.transaction  import Transaction
from trytond.pyson import Bool, Eval, If, Id, Equal
from trytond.pool import Pool
from trytond.modules.currency.fields import Monetary
from trytond.modules.product import price_digits

import datetime
from datetime import timedelta

#from scipy.stats import t
#import matplotlib.pyplot as plt
#import numpy as np
#import math as mt

from io import BytesIO 
from trytond.exceptions import UserError

_digits = (16, 2) 


class MaintenanceService(Workflow, ModelSQL, ModelView):
    'Equipment Maintenance Service'
    __name__ = 'optical_equipment_maintenance.service'


class MaintenanceLine(Workflow, ModelSQL, ModelView):
    'Equipment Maintenance'
    __name__ = 'optical_equipment.maintenance'