我写了一个代码从网站上提取表，但是我不能这样做。
from selenium import webdriver
import time, re
from selenium.webdriver.support.ui import Select
from bs4 import BeautifulSoup
import pandas as pd
from selenium import webdriver
import time
chrome_path = r"C:\Users\user\Desktop\chromedriver_win32\chromedriver.exe"
driver = webdriver.Chrome(chrome_path)
driver.get("http://www.nhb.gov.in/OnlineClient/MonthlyPriceAndArrivalReport.aspx")
html_source = driver.page_source
results=[]
#cauliflower
element_month = driver.find_element_by_id ("ctl00_ContentPlaceHolder1_ddlmonth")
drp_month = Select(element_month)
drp_month.select_by_visible_text("January")
element_category_name = driver.find_element_by_id ("ctl00_ContentPlaceHolder1_drpCategoryName")
drp_category_name = Select(element_category_name)
drp_category_name.select_by_visible_text("VEGETABLES")
time.sleep(2)
element_crop_name = driver.find_element_by_id ("ctl00_ContentPlaceHolder1_drpCropName")
drp_crop_name = Select(element_crop_name)
drp_crop_name.select_by_value("117")
time.sleep(2)
element_variety_name = driver.find_element_by_id ("ctl00_ContentPlaceHolder1_ddlvariety")
drp_variety_name = Select(element_variety_name)
drp_variety_name.select_by_value("18")
element_state = driver.find_element_by_id ("ctl00_ContentPlaceHolder1_LsboxCenterList")
drp_state = Select(element_state)
drp_state.select_by_visible_text("AHMEDABAD")
driver.find_element_by_xpath("""//*[@id="ctl00_ContentPlaceHolder1_btnSearch"]""").click()
soup = BeautifulSoup(driver.page_source, 'html.parser')
table = pd.read_html(driver.page_source)[3]
#number three is arbitrary. I tried all numbers from 1 to 6 and python did
#not recognize the table at
the bottom of the scree.
print(len(table))
print(table)
with pd.ExcelWriter(r'C:\Users\user\Desktop\python.xlsx') as writer:
table.to_excel(writer, sheet_name = "cauliflower", index=False) # cauliflower results on sheet named
cauliflower
writer.save()
能否请您帮我弄清楚如何提取网站底部的表格。您的帮助将不胜感激。先感谢您。