在循环中作为字典传递时，使用python的selenium不会填充下拉列表

Question

我有这个函数来使用selenium填充webfrom

def fill_form(self, action, dict):
        import time
        print "Starting %s ... \n" % action

        # fill the form
        for key in dict.keys():
            try:
                inputElement = self._driver.find_element_by_name(key)
                inputElement.clear()
                inputElement.send_keys(dict[key])
                time.sleep(0.5)
            except:
                self.log()
                pass

当然，这个功能是课堂的一部分

使用这个函数selenium忽略任何下拉菜单，因此我必须填写每个下拉菜单，然后始终使用正常语句但在循环之前例如：

^{pr2}$

我试着不使用函数来使用循环，但结果是一样的，问题是循环！在

日志文件中也有许多异常

[2013-14-01 21:51:55] (<class 'selenium.common.exceptions.NoSuchElementException'>, NoSuchElementException(), <traceback object at 0x0212BFA8>)
[2013-14-01 21:52:04] (<class 'selenium.common.exceptions.NoSuchElementException'>, NoSuchElementException(), <traceback object at 0x021372B0>)
[2013-14-01 21:52:04] (<class 'selenium.common.exceptions.NoSuchElementException'>, NoSuchElementException(), <traceback object at 0x021431C0>)
[2013-14-01 21:52:51] (<class 'selenium.common.exceptions.WebDriverException'>, WebDriverException(), <traceback object at 0x0212FE90>)

---

全班

# -*- coding: utf-8 -*-
"""
 *                                                                   *
 * PyWebBot Automated Web Tasks based on Selenium using dictionaries *
 *                                                                   *
Features:
    (1) - Login function
    (2) - Visit Link
    (3) - Make Screenshot
    (4) - Fill and sumbit forms

Filename:   ClassPyWebBot
Author:     Isaak Wahb (Wahb Ben Ishak)
Contact:    ben.ishak@tum.de

Date:       2012-08-15
Version:    1.0
Licence:    GPL v2

Usage:
    bot = PyWebBot([Selenium Webdriver] driver,
                   [dict(username,password)] user,
                   [String] _LogPath,
                   [String] _ScreenshotPath)

    bot.run([String] action, 
            [dict] dict,
            [String] baseurl,
            [String] suburl)

"""

class PyWebBot():
    """
    PyWebBot Automated Web Tasks Class
    """

    def __init__(self,_driver, _user, _LogPath, _ScreenshotPath):
        object.__init__(self)
        self._driver = _driver
        self._user = _user
        self._LogPath = _LogPath
        self._ScreenshotPath = _ScreenshotPath
        pass

    def log(self):
        import time, sys, os
        path = os.path.join(self._LogPath)
        logfile = os.path.join(path,'error_log').replace(os.sep,'/')
        time_x = time.strftime("%Y-%d-%m %H:%M:%S", time.gmtime(time.time()))
        with open(logfile,'a') as log:
            return log.write("[%s] %s\n" % (time_x, str(sys.exc_info()).strip()))

    def screenshot(self, imgname):
        import os, time
        try:
            time.sleep(1)
            self._driver.get_screenshot_as_file(os.path.join(self._ScreenshotPath,imgname))
        except:
            self.log()
            pass

    def login(self):
        import time
        try:
            inputElement = self._driver.find_element_by_name('username')
            inputElement.send_keys(self._user['username'])
            inputElement = self._driver.find_element_by_name('password')
            inputElement.send_keys(self._user['password'])
            self.screenshot('user_login_%s__%s.png' % (self._user['username'], time.time()))
            inputElement.submit()
        except:
            self.log()
            pass

    def visit_link(self, baseurl, suburl):
        import time
        try:
            self._driver.get("%s/%s" %(baseurl, suburl))
            # Capture screen after visit
            self.screenshot('visted_link_%s_%s__%s.png' % (suburl.replace('/','_'), self._user['username'], time.time()))
        except:
            self.log()
            pass

    def fill_form(self, action, dict):
        import time
        print "Starting %s ... \n" % action

        # fill the form
        for key in dict.keys():
            try:
                inputElement = self._driver.find_element_by_name(key)
                inputElement.clear()
                inputElement.send_keys(dict[key])
                time.sleep(0.5)
            except:
                self.log()
                pass

        # capture screen before
        self.screenshot('%s_%s__%s.png' % (action, self._user['username'], time.time()))

        # submit the form
        try:
            inputElement.submit()
        except:
            pass

        # Capture screen after submit
        self.screenshot('%s_%s_submited__%s.png' % (action, self._user['username'], time.time()))

        print "%s done.\n" % action

    def run(self, action , dict, baseurl, suburl, login=True):
        try:
            # Visit link
            self.visit_link(baseurl, suburl)

            # need to login ?
            if login: self.login()

            # Fill form
            self.fill_form(action, dict)

            # Close driver
            print "Finished\n"
            self._driver.close()
            pass
        except:
            self.log()
            print "Error ... check error_log"