我在现有帖子中找不到解决方案（尽管我一直在寻找）。在下拉菜单中进行选择后，我试图从代码中的URL抓取数据。最后，我想单击“保存”按钮并下载excel文件。这是可以正常运行的代码，但最终无法单击“保存”按钮。

from selenium import webdriver
from selenium.webdriver.support.ui import Select
from selenium.webdriver.support.ui import WebDriverWait

from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import NoSuchElementException


url = 'http://omms.nic.in/#'
browser = webdriver.Chrome()
browser.get(url)

单击菜单中的“进度监视”项，然后单击“物理和财务项目摘要”项。然后，为每个下拉项进行选择。

progElem = browser.find_element_by_link_text('Progress Monitoring').click()
summElem = browser.find_element_by_link_text("Physical and Financial Project 
Summary").click()

browser.implicitly_wait(10)

#select the state
stateElem = browser.find_element_by_xpath("//select[@name='StateCode']")
state_select = Select(stateElem)
ap = state_select.select_by_visible_text('Andhra Pradesh')

#select the district
distElem = browser.find_element_by_xpath("//select[@name='DistrictCode']")
dist_select = Select(distElem)
dist = dist_select.select_by_visible_text('All Districts')

#select the block
blockElem = browser.find_element_by_xpath("//select[@name='BlockCode']")
block_select = Select(blockElem)
block = block_select.select_by_visible_text('All Blocks')

#select the year
yearElem = browser.find_element_by_xpath("//select[@name='Year']")
year_select = Select(yearElem)
year = year_select.select_by_visible_text('2016-2017')

#select the batch
batchElem = browser.find_element_by_xpath("//select[@name='Batch']")
batch_select = Select(batchElem)
batch = batch_select.select_by_visible_text('All Batches')

#select the funding agency
collabElem = 
browser.find_element_by_xpath("//select[@name='FundingAgency']")
collab_select = Select(collabElem)
collab = collab_select.select_by_visible_text('Regular PMGSY')

# check the roadwise box
checkElem = browser.find_element_by_xpath("//input[@name='RoadWise']")
browser.execute_script("arguments[0].click();", checkElem)

# click on the view button
viewElem = browser.find_element_by_xpath("//input[@type='button']")
viewElem.click()

#switch to a new frame
browser.switch_to_frame(browser.find_element_by_xpath("//iframe"))
WebDriverWait(browser, 40).until( 
EC.element_to_be_clickable((By.XPATH,"//table[@title='Export drop down 
menu']")))
saveElem = browser.find_element_by_xpath("//table[@title='Export drop down 
menu']")
saveElem.click()

#excelElem = browser.find_element_by_xpath("//a[@title='Excel']")
#excelElem.click()
#browser.execute_script("arguments[0].click();", excelElem)

该代码成功运行，但是，没有单击保存按钮。令人惊讶的是，一旦我在spyder编辑器中运行了代码。然后在IPython
shell中键入saveElem.click（），以单击该按钮。

我太初学者了，不明白发生了什么。