两个 for 循环 - 我如何运行

Question

I'm running this on Python (selenium):

I can run this successfully for one iteration after that, it doesn't recognise the outer loop and shows an error.

elements = browser.find_elements_by_xpath('//*[@id="dtree0"]/div/a')
names=[]
for elem in elements:
    names.append(elem.text)
    print(names)

 for id in range (2, 170):
        for i in range(0, len(elements)):
            elements = browser.find_elements_by_xpath ('//*[@id="dtree0"]/div/a')
            elem = elements[i]
    #     #         # only click the elements in the names list (this level)
            if elem.text in names:
                try:
                    elem.click()
                except WebDriverException:
                     pass  # ignore if elem is not clickable
            # browser.find_elements_by_id("stree2").click()
            my_id = "stree{}".format(id)
            browser.find_element_by_id(my_id).click()
            browser.find_element_by_xpath (
                    '/html/body/center[2]/form/table[1]/tbody/tr/td[3]/table/tbody/tr[5]/td[1]/a[1]/img').click ()
            browser.find_element_by_xpath ('/html/body/center[2]/form/table[2]/tbody/tr/td[4]/input').click ()
            browser.find_element_by_xpath ('/html/body/center/form/table[2]/tbody/tr/td[5]/a').click ()
            sleep (5)
            browser.find_element_by_xpath ('//*[@id="personas"]/b').click ()
            browser.find_element_by_xpath('//*[@id="menu_personas"]/a[2]').click()

How can I modify this so that it runs both of these for loops on every iteration.

The error is as follows: selenium.common.exceptions.ElementNotInteractableException: Message: element not interactable

I believe this is because the "Stree" part is not being understood by the program since the outer for loop is not working.

The webpage looks like this:

The folders part is the "elements" and the "id" part are the files. I want to open the folders and download the files all of them.

Answer 1

You get the length of elements and then change elements by assigning to it inside the loop. This is because of your double use of elements. It should be 2 different variables.

for id in range (2, 170):
    for i in range(0, len(elements)):
        elements_2 = browser.find_elements_by_xpath ('//*[@id="dtree0"]/div/a')
        elem = elements_2[i]

That is if the second loop is inside the first loop. Your indentation is unclear.