Python Selenium BeautifulSoup页面源代码无法显示所有内容

Question

目标： 您好，我是Web和Selenium的新手。我目前正在尝试从JIRA董事会获取价值。此处：

问题： 由于某种原因，该值未显示在页面源中。我认为这可能是JavaScript呈现的价值？或页面加载后生成。我尝试使用implicitly_wait，WebDriverWait和switch_Frame，但似乎无济于事。 = /

代码：

#!/usr/local/bin/python2.7
#import requests
import json
import base64
import sys
import getopt
import argparse
from datetime import datetime
from datetime import timedelta
from bs4 import BeautifulSoup
from jira import JIRA
from jira.client import GreenHopper
import selenium
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.firefox.firefox_binary import FirefoxBinary
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
from selenium.common.exceptions import TimeoutException

JIRA_INSTALLATION = "jira.turn.com"
STATE_IN_PROGRESS = "In Progress"
STATE_RESOLVED    = "Resolved"
STATE_CLOSED      = "Closed"
options = {'server': 'https://jira.turn.com'}
CUR_TIMEZONE_SHIFT = timedelta(hours=7)

def main(argv):
    p=argparse.ArgumentParser(description="Gets a set of completed stories and list them with their implementation time.")
    p.add_argument('filter_id', help="Id of the filter that contains completed stories.")
    p.add_argument('-u', dest='username', help="JIRA username. Needs to have read access to all tickets returned from the search filter.")
    p.add_argument('-p', dest='password', help="Password for the JIRA user to use for API calls.")
    args = p.parse_args(argv)

    driver = webdriver.Firefox()
    driver.get('https://jira.turn.com/')
    driver.find_element_by_id("login-form-username").send_keys(args.username)
    driver.find_element_by_id ("login-form-password").send_keys(args.password)
    driver.find_element_by_id("login").click()
    #driver.implicitly_wait(10)
    #ele = WebDriverWait(driver, 10)
    driver.get('https://jira.turn.com/secure/RapidBoard.jspa?rapidView=184&view=reporting&chart=controlChart&days=30&column=1214&column=1298')

    #WebDriverWait
    soup_level1 = BeautifulSoup(driver.page_source, 'lxml')#'html.parser')#'lxml')
    print soup_level1.find(id='ghx-chart-snapshot')#find(id='content').find(id="gh").find(id="ghx-content-main").find(id="ghx-chart-header"))
    print soup_level1.find(id='ghx-chart-snapshot').find(id='ghx-chart-snapshot')

    driver.quit()

    return 

if __name__ == "__main__":
   main(sys.argv[1:])

输出：

<div id="ghx-chart-snapshot"></div>
None