如何使用Selenium和Python从下拉菜单中选择一个选项

Question

我正在尝试使用Python中的Selenium获取大都会北部所有车站组合的票价。我想转到他们的票价页面，将车站名称放入选择字段，单击票价按钮，然后将所需的值复制到数据框中。

我尝试了所有可能的选项，从下拉菜单中选择电台，但是当收到错误消息ElementNotInteractableException时，任何方法都无效。

我尝试的代码：

driver = webdriver.Safari()
driver.get('http://as0.mta.info/mnr/schedules/sched_form.cfm')

select = Select(driver.find_element_by_id('Vorig_station'))
print([o.text for o in select.options])
time.sleep(3)
select.select_by_visible_text('ANSONIA')
element = driver.find_element_by_xpath('//*[@id="frmindex"]/table[2]/tbody/tr[6]/td/input[2]')
element.click()
driver.close()

打印命令显示了这些选项，但我无法选择并进入下一个票价页面。

请帮助！

Answer 1

要使用Selenium和python获取北大都会地铁站所有组合的票价，请从 From Staion 中选择选项 ANSONIA drop-down-menu，您需要为element_to_be_clickable()引入WebDriverWait，并且可以使用以下Locator Strategies：

• 使用CSS_SELECTOR：

  driver.get("http://as0.mta.info/mnr/schedules/sched_form.cfm")
  WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "select#Vorig_station"))).click()
  select = Select(WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "select#Vorig_station"))))
  print([o.text for o in select.options])
  select.select_by_visible_text('ANSONIA')
  WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "input[value='fares']"))).click()
  

• 使用XPATH：

  driver.get("http://as0.mta.info/mnr/schedules/sched_form.cfm")
  WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "//select[@id='Vorig_station']"))).click()
  select = Select(WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "//select[@id='Vorig_station']"))))
  print([o.text for o in select.options])
  select.select_by_visible_text('ANSONIA')
  WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "//input[@value='fares']"))).click()
  

• 控制台输出：

  ['ANSONIA', 'APPALACHIAN TRAIL', 'ARDSLEY-ON-HUDSON', 'BEACON', 'BEACON FALLS', 'BEDFORD HILLS', 'BETHEL', 'BOTANICAL GARDEN', 'BRANCHVILLE', 'BREAKNECK RIDGE', 'BREWSTER', 'BRIDGEPORT', 'BRONXVILLE', 'CANNONDALE', 'CHAPPAQUA', 'COLD SPRING', 'CORTLANDT', 'COS COB', 'CRESTWOOD', 'CROTON FALLS', 'CROTON-HARMON', 'DANBURY', 'DARIEN', 'DERBY', 'DOBBS FERRY', 'DOVER PLAINS', 'EAST NORWALK', 'FAIRFIELD', 'FAIRFIELD METRO', 'FLEETWOOD', 'FORDHAM', 'GARRISON', 'GLENBROOK', 'GLENWOOD', 'GOLDENS BRIDGE', 'GRAND CENTRAL', "GREEN'S FARMS", 'GREENWICH', 'GREYSTONE', 'HARLEM - 125TH ST.', 'HARLEM VALLEY-WINGDALE', 'HARRISON', 'HARTSDALE', 'HASTINGS-ON-HUDSON', 'HAWTHORNE', 'IRVINGTON', 'KATONAH', 'LARCHMONT', 'LUDLOW', 'MAMARONECK', 'MANITOU', 'MARBLE HILL', 'MEADOWLANDS SPORTS COMPLEX', 'MELROSE', 'MERRITT 7', 'MILFORD', 'MORRIS HEIGHTS', 'MOUNT KISCO', 'MOUNT PLEASANT', 'MT VERNON EAST ', 'MT VERNON WEST', 'NAUGATUCK', 'NEW CANAAN', 'NEW HAMBURG', 'NEW HAVEN', 'NEW ROCHELLE', 'NH-STATE ST.', 'NOROTON HEIGHTS', 'NORTH WHITE PLAINS', 'OLD GREENWICH', 'OSSINING', 'PATTERSON', 'PAWLING', 'PEEKSKILL', 'PELHAM', 'PHILIPSE MANOR', 'PLEASANTVILLE', 'PORT CHESTER', 'POUGHKEEPSIE', "PURDY'S", 'REDDING', 'RIVERDALE', 'RIVERSIDE', 'ROWAYTON', 'RYE', 'SCARBOROUGH', 'SCARSDALE', 'SEYMOUR', 'SOUTH NORWALK', 'SOUTHEAST', 'SOUTHPORT', 'SPRINGDALE', 'SPUYTEN DUYVIL', 'STAMFORD', 'STRATFORD', 'TALMADGE HILL', 'TARRYTOWN', 'TENMILE RIVER', 'TREMONT', 'TUCKAHOE', 'UNIVERSITY HEIGHTS', 'VALHALLA', 'WAKEFIELD', 'WASSAIC', 'WATERBURY', 'WEST HAVEN', 'WESTPORT', 'WHITE PLAINS', 'WILLIAMS BRIDGE', 'WILTON', 'WOODLAWN', 'YANKEES-E153 ST.', 'YONKERS']
  

• 注意：您必须添加以下导入：

  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
  

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