How to download multiple files from a site selecting each option of a dropdown using Selenium in python

问题

I am trying to download multiple files from a site using Selenium in python using the following code.

from selenium import webdriver
import pandas as pd
driver = webdriver.Chrome('chromedriver.exe')
driver.maximize_window()
driver.get('https://www10.goiania.go.gov.br/TransWeb/FuncionariosExportarPopUp.aspx?_=1590514086637')
element = driver.find_element_by_id('WebPatterns_wt12_block_wtMainContent_wtcboReferencia')
all_options = element.find_elements_by_tag_name("option")
selectYear = Select(driver.find_element_by_id("WebPatterns_wt12_block_wtMainContent_wtcboReferencia"))
link = driver.find_element_by_id('WebPatterns_wt12_block_wtMainContent_wtbtnGerar')
for option in all_options[:267]:
    print("Value is: %s" % option.get_attribute("value"))
    selectYear.select_by_value(option)
    link.click()
    time.sleep(5000)

But i'm getting this error and i do not know how to solve it.

TypeError: argument of type 'WebElement' is not iterable

This is the first time that i am using selenium.

回答1:

To download multiple files from the site https://www10.goiania.go.gov.br/TransWeb/FuncionariosExportarPopUp.aspx?_=1590514086637 using Selenium and python selecting each option from the Referência drop-down-menu you need to induce WebDriverWait for the element_to_be_clickable() and you can use the following Locator Strategies:

Code Block:

driver.get("https://www10.goiania.go.gov.br/TransWeb/FuncionariosExportarPopUp.aspx?_=1590514086637")
select = Select(WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "//select[@id='WebPatterns_wt12_block_wtMainContent_wtcboReferencia']"))))
for opt in select.options:
    opt.click()
    WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "//input[@value='Gerar']"))).click()

Note : You have to add the following imports :

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.webdriver.support.ui import Select

回答2:

Can you try assigning the list of elements for all_options to a list, for iteration to work.Then read the elements in for loop.

all_options = []

回答3:

did you try this?

for option in range(len(all_options[:267])):

来源：https://stackoverflow.com/questions/62029058/how-to-download-multiple-files-from-a-site-selecting-each-option-of-a-dropdown-u

标签

python

selenium

web-scraping

drop-down-menu

webdriverwait