python - NameError: グローバル名 'is_sequence' が定義されていません

Question

クラスdegree_day(osv.osv)に関数is_sequence(arg)を作成しました

書き込み関数からこの関数を呼び出すと、システムはエラーを生成します。

NameError: グローバル名 'is_sequence' が定義されていません

システムがこの機能を見つけられない理由がわかりません。

Client Traceback (most recent call last):
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\openerp\addons\web\http.py", line 204, in dispatch
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\openerp\addons\web\controllers\main.py", line 1130, in call_kw
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\openerp\addons\web\controllers\main.py", line 1122, in _call_kw
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\openerp\addons\web\session.py", line 42, in proxy
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\openerp\addons\web\session.py", line 30, in proxy_method
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\openerp\addons\web\session.py", line 103, in send


Server Traceback (most recent call last):
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\openerp\addons\web\session.py", line 89, in send
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\.\openerp\netsvc.py", line 292, in dispatch_rpc
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\.\openerp\service\web_services.py", line 626, in dispatch
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\.\openerp\osv\osv.py", line 188, in execute_kw
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\.\openerp\osv\osv.py", line 131, in wrapper
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\.\openerp\osv\osv.py", line 197, in execute
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\.\openerp\osv\osv.py", line 185, in execute_cr
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\openerp\addons\degree_day\degree_day.py", line 187, in correct_future_degree_day
  File "C:\Program Files (x86)\OpenERP 7.0-20130520-231036\Server\server\openerp\addons\degree_day\degree_day.py", line 79, in write
NameError: global name 'is_sequence' is not defined

degree_day.py

from openerp.osv import osv, fields
from dateutil.parser import *
from dateutil.tz import *
from datetime import *


class degree_day(osv.osv):

    _name = "degree.day"
    _order = "date"
    _columns={
        'date': fields.date('Date'),
        'high_temp': fields.integer('High Temp'),
        'low_temp': fields.integer('Low Temp'),
        'heat_degree_day': fields.integer('Heat Degree Day' ),
        'hw_degree_day': fields.integer('Hot Water Degree Day' ),
        'state': fields.selection([
            ('normal','Normal'),
            ('initial_dd_adjust','Adjust Initial Degree Day')
            ], 'Status', readonly=True, track_visibility='onchange',
            help=' * The \'Normal\' status is used when a user is entering high and low temps and degree day values are readonly \
            \n* The \'Adjust Initial Degree Day\' status is used when a user is manually adjusting the first degree day records degree day values.'),
        'debug':fields.text('Debug text'),
        'initial_dd_record': fields.boolean("First DD Record"),
    }

    _defaults = {
        'state': lambda *a: 'normal',
    }

    def is_sequence(arg):
            return (not hasattr(arg, "strip") and
                hasattr(arg, "__getitem__") or
                hasattr(arg, "__iter__"))

    def write(self, cr, uid, ids, vals, context=None):
        debug = '... '
        dd_recs = self.pool.get('degree.day')

        # were degree.day records retrieved?
        if dd_recs:
            debug += " dd_recs not null:" 

            # initial dd recs have dd values entered manually 
            # since there is no Day Before to draw from
            init_dd_rec = dd_recs.read(cr, uid, ids, ["initial_dd_record"])
            debug += "initial_dd_record="+str(init_dd_rec)+":"

            # sometimes this comes thorugh as a list and sometimes as single
            # convert to single if list
            if is_sequence(init_dd_rec):
                one_init_dd_rec = init_dd_rec[0]
            else:
                one_init_dd_rec = init_dd_rec

            # skip readonly override code if initial_dd_record is true
            # as all fields are readonly=False in this case
            if not one_init_dd_rec:
                debug += " not initial dd rec:" 

                # if high_temp not present, add it
                if not vals.has_key('high_temp'):
                    debug += " no high_temp:"
                    vals['high_temp'] = dd_recs.read(cr, uid, ids, ["high_temp"])[0]['high_temp']

                # if low_temp not present, add it
                if not vals.has_key('low_temp'):
                    debug += " no low_temp:"
                    vals['low_temp'] = dd_recs.read(cr, uid, ids, ["low_temp"])[0]['low_temp']

                vals['date'] = dd_recs.read(cr, uid, ids, ["date"])[0]['date']
                debug += " vals['date']="+vals['date']+":"
                debug += " dd_recs.read(cr, uid, ids, ['date'])=" +str(dd_recs.read(cr, uid, ids, ['date']))+":"

                # date seems to be stored as a string, so need to convert it before 
                # using it to find yesterdays date
                adate = parse(vals['date'])
                day_before = adate - timedelta(days=1)
                db_ids = dd_recs.search(cr, uid, [("date", "=", day_before)])

                # is there a record for yesterday?
                if db_ids:
                    debug += " ids not null:"
                    last_hdd = dd_recs.read(cr, uid, db_ids[0], ['heat_degree_day'])['heat_degree_day']
                    debug += " last_hdd="+str(last_hdd)+":"
                    last_hwdd = dd_recs.read(cr, uid, db_ids[0], ['hw_degree_day'])['hw_degree_day']
                    high_temp = vals['high_temp']
                    low_temp = vals['low_temp']
                    a = 65 - ((high_temp + low_temp)/2)
                    if a < 0:
                        a = 0
                    vals['heat_degree_day'] = a + last_hdd
                    vals['hw_degree_day'] = a + 5 + last_hwdd

        vals['debug'] = debug

        return super(degree_day, self).write(cr, uid, ids, vals, context=context)



    def create(self, cr, uid, vals, context=None):
        debug = '... '
        if vals.has_key('high_temp') and vals.has_key('low_temp'):
            adate = parse(vals['date'])
            day_before = adate - timedelta(days=1)
            dd_recs = self.pool.get('degree.day')
            # were any degree.day records retrieved?
            if dd_recs:
                debug += " dd_recs not null:" 
                ids = dd_recs.search(cr, uid, [("date", "=", day_before)])
                # is there a record for yesterday?
                if ids:
                    debug += " ids not null:"
                    last_hdd = dd_recs.read(cr, uid, ids[0], ["heat_degree_day"])
                    last_hwdd = dd_recs.read(cr, uid, ids[0], ["hw_degree_day"])
                    high_temp = vals['high_temp']
                    low_temp = vals['low_temp']
                    a = 65 - ((high_temp + low_temp)/2)
                    if a < 0:
                        a = 0
                    vals['heat_degree_day'] = a + last_hdd['heat_degree_day']
                    vals['hw_degree_day'] = a + 5 + last_hwdd['hw_degree_day']

        vals['debug'] = debug
        return super(degree_day, self).create(cr, uid, vals, context=context)



    def correct_future_degree_day(self, cr, uid, ids, heat_degree_day, hw_degree_day, date, debug, context=None):
        """ when a degree days record is changed, all following records must be corrected
        @param high_temp: The day's high temperature
        @param low_temp: The day's low temperature
        """
        v={}
        debug = "... "

        dd_recs = self.pool.get('degree.day')
        if dd_recs:
            debug += " dd_recs not null:" 
            ids = dd_recs.search(cr, uid, [("date", ">=", date)], 0, None, "date")
            # are there records after this date?
            if ids:
                debug += " future records found:"
                running_hdd = heat_degree_day
                running_hwdd = hw_degree_day
                # cycle through each record recalculating degree day values
                for i in ids:
                    debug += "loop " + str(i) + ":"
                    low_temp = dd_recs.read(cr, uid, i, ["low_temp"])["low_temp"]
                    high_temp = dd_recs.read(cr, uid, i, ["high_temp"])["high_temp"]
                    # degree day calculation
                    a = 65 - ((high_temp + low_temp)/2)
                    if a < 0:
                        debug += " a<0:"
                        a = 0
                    running_hdd += a
                    running_hwdd += a + 5
                    update_dd = {"heat_degree_day":running_hdd, "hw_degree_day":running_hwdd}
                    dd_recs.write(cr, uid, i, update_dd, context=None)
                    debug += " done:"

        v['debug'] = debug
        return {'value':v}

degree_day_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <record id="degree_day_tree" model="ir.ui.view">
            <field name="name">degree.day.tree</field>
            <field name="priority" eval="1"/>           
            <field name="model">degree.day</field>
             <field name="arch" type="xml">
                <tree string="Degree Day List">
                    <field name="date"  />
                    <field name="high_temp" />
                    <field name="low_temp" />
                    <field name="heat_degree_day"  /> 
                    <field name="hw_degree_day" />
                    <field name="state" invisible="True" />
                    <field name="debug" />
                </tree>
            </field>
        </record>

        <record id="degree_day_form" model="ir.ui.view">
            <field name="name">degree.day.form</field>
            <field name="model">degree.day</field>
            <field name="priority" eval="2"/>           
            <field name="arch" type="xml">
                <form string="Degree Day" version="7.0">
                    <sheet string="Degree Day">
                        <h1>Day <field name="date" class="oe_inline"/></h1>
                        <group>
                            <field name="low_temp" readonly="False"/>
                            <field name="high_temp" readonly="False"/>
                        </group>
                        <group>
                            <field name="heat_degree_day" attrs="{'readonly': [('initial_dd_record','=',False)]}" on_change="correct_future_degree_day(heat_degree_day, hw_degree_day, date, debug)"/>
                            <field name="hw_degree_day" attrs="{'readonly': [('initial_dd_record','=',False)]}" on_change="correct_future_degree_day(heat_degree_day, hw_degree_day, date, debug)" />
                        </group>
                        <group>
                            <field name="initial_dd_record" />
                        </group>
                        <field name="state" invisible="True" />
                        <field name="debug" />
                    </sheet>
                </form>
            </field>
        </record>

        <record id="show_degree_day" model="ir.actions.act_window">
            <field name="name">Degree Day</field>
            <field name="view_id" ref="degree_day_tree" />
            <field name="res_model">degree.day</field>
            <field name="view_type">form</field>
            <field name="view_mode">tree,form</field>
        </record>

        <menuitem id="degree_day_menu" name="Degree Day"/>
        <menuitem id="degree_day_main_menu" parent="degree_day_menu" name="Degree Day Menu" />

        <menuitem name="Degree Day List" id="menu_degree_day_list"  
            parent="degree_day_main_menu" action="show_degree_day"/>


    </data>

</openerp>

Answer 1

is_sequence(..)asを呼び出し、静的メソッドとしてself.is_sequence(..)作成is_sequenceします。

また

関数を作成is_sequenceします。（クラスから出てください）。

Answer 2

関数を degree_day クラスのインスタンスにバインドせずに呼び出す場合は、degree_day.is_sequence を使用して関数を呼び出し、関数の最初の引数として degree_day のインスタンスを渡す必要があります。

ただし、インスタンス メソッドまたは静的メソッドにせずに、関数のスコープをクラスに制限することはあまり意味がありません。静的メソッドにする必要がある場合は、'@staticmethod' で装飾します。インスタンス メソッドにする必要がある場合は、最初の引数として self を渡して、以下の他のメソッドと同様に定義します。

したがって、2つのオプションは
1) 静的メソッド

@staticmethod
def is_sequence(arg):
    ...

2) インスタンスメソッド

def is_sequence(self, arg):
    ...

最初のケースでは、degree_day.is_sequence で呼び出すことができます。2 番目のケースでは、別のメソッド内から呼び出しているため、self.is_sequence で呼び出すことができます。