Python，mechanize，尝试处理select和checkbox控件

我正在尝试用mechanize填充一个相当复杂的web表单，结果出现了一个错误。 我做了以下工作：

from mechanize import Browser
url = 'some_url_here'

br = Browser() # going around robot.txt 
br.set_handle_robots(False)
br.set_handle_equiv(False)
br.addheaders = [('User-agent', 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.1) Gecko/2008071615 Fedora/3.0.1-1.fc9 Firefox/3.0.1')]

br.open(url) # opening the website I need

# here I did some work studying html and finding the forms I need

br.select_form(nr=0)    # I need the first form and here the controls I need
print br.form.controls[2].name, '           type=', br.form.controls[2].type
print br.form.controls[4].name, '         type=', br.form.controls[4].type
print br.form.controls[6].name, '         type=', br.form.controls[6].type
print br.form.controls[7].name, '         type=', br.form.controls[7].type
print br.form.controls[9].name, '      type=', br.form.controls[9].type

out:
okato            type= select
grvdtov          type= select
viddata          type= select
god_chk          type= checkbox
period_chk       type= checkbox

# and here where I'm trying to select what I need and fail:

br.select_form(nr=0)
br.form.controls[2] = ['Российская Федерация']  # selecting values I need
br.form.controls[4] = ['Все товары и услуги', 'Базовый индекс потребительских цен'] 
br.form.controls[6] = ['в % к предыдущему месяцу'] 
br.controls[7].items[0].selected=True # ticking the checkbox
br.controls[9].items[0].selected=True 
reponse = br.submit()   # submitting

这里是我得到的错误：

    ---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-70-c173bbf420d3> in <module>()
      5 br.controls[7].items[0].selected=True
      6 br.controls[9].items[0].selected=True
----> 7 reponse = br.submit()

C:\Users\Asus\Anaconda3\envs\Python2\lib\site-packages\mechanize\_mechanize.pyc in submit(self, *args, **kwds)
    539 
    540         """
--> 541         return self.open(self.click(*args, **kwds))
    542 
    543     def click_link(self, link=None, **kwds):

C:\Users\Asus\Anaconda3\envs\Python2\lib\site-packages\mechanize\_mechanize.pyc in click(self, *args, **kwds)
    528         if not self.viewing_html():
    529             raise BrowserStateError("not viewing HTML")
--> 530         request = self.form.click(*args, **kwds)
    531         return self._add_referer_header(request)
    532 

C:\Users\Asus\Anaconda3\envs\Python2\lib\site-packages\mechanize\_form.pyc in click(self, name, type, id, nr, coord, request_class, label)
   2997         """
   2998         return self._click(name, type, id, label, nr, coord, "request",
-> 2999                            self._request_class)
   3000 
   3001     def click_request_data(self,

C:\Users\Asus\Anaconda3\envs\Python2\lib\site-packages\mechanize\_form.pyc in _click(self, name, type, id, label, nr, coord, return_type, request_class)
   3190         try:
   3191             control = self._find_control(
-> 3192                 name, type, "clickable", id, label, None, nr)
   3193         except ControlNotFoundError:
   3194             if ((name is not None) or (type is not None) or (id is not None) or

C:\Users\Asus\Anaconda3\envs\Python2\lib\site-packages\mechanize\_form.pyc in _find_control(self, name, type, kind, id, label, predicate, nr)
   3144             if type is not None and type != control.type:
   3145                 continue
-> 3146             if kind is not None and not control.is_of_kind(kind):
   3147                 continue
   3148             if id is not None and id != control.id:

AttributeError: 'list' object has no attribute 'is_of_kind'

---------------------------------------------------------------------------
AttributeError回溯（最近一次呼叫上次）
在（）
5 br.控件[7]。项[0]。选定项=True
6 br.控件[9]。项[0]。选定项=True
---->7响应=br.提交（）
提交中的C:\Users\Asus\Anaconda3\envs\Python2\lib\site packages\mechanize\\u mechanize.pyc（self，*args，**kwds）
539
540         """
-->541返回self.open（self.click（*args，**kwds））
542
543 def点击链接（self，link=None，**kwds）：
C:\Users\Asus\Anaconda3\envs\Python2\lib\site packages\mechanize\\u mechanize.pyc单击（self，*args，**kwds）
528如果不是self.viewing_html（）：
529 raise BrowserStateError（“不查看HTML”）
-->530 request=self.form.click（*args，**kwds）
531返回self.\u添加\u引用\u头（请求）
532
点击C:\Users\Asus\Anaconda3\envs\Python2\lib\site packages\mechanize\\ form.pyc（self、name、type、id、nr、coord、request\u class、label）
2997         """
2998返回自我。\单击（名称、类型、id、标签、编号、坐标，“请求”，
->2999自我要求（课程）
3000
3001 def点击请求数据（自身、，
C:\Users\Asus\Anaconda3\envs\Python2\lib\site packages\mechanize\ form.pyc in\单击（self、name、type、id、label、nr、coord、return\ type、request\ class）
3190试试：
3191控制=自我。\找到\u控制(
->3192名称，类型，“可点击”，id，标签，无，编号）
3193除ControlNotFoundError外：
3194如果（（名称不是None）或（类型不是None）或（id不是None）或
C:\Users\Asus\Anaconda3\envs\Python2\lib\site packages\mechanize\ form.pyc在\u find\控件中（self、name、type、kind、id、label、predicate、nr）
3144如果类型不是无且类型！=control.type:
3145继续
->3146如果种类不是无且不是控制。是否为种类（种类）：
3147继续
3148如果id不是None且id！=control.id:
AttributeError:“列表”对象没有属性“属于”

有谁能告诉我哪里出了问题，以及如何解决？ 谢谢大家!