python - Selenium :无法下载文件

Question

我正在尝试使用this网站自动从YouTube下载mp3文件。

目标:

访问下载网站

粘贴YouTube链接

点击“转换视频”

等待下载链接出现，然后单击它

当我使用browser.find_by_id('dl_link').click()时，我的代码执行时没有任何错误，但未下载文件。为什么？

当我使用browser.click_link_by_partial_text('Download')时，出现以下错误。

这是我的代码:

from splinter.browser import Browser
import time

with Browser() as browser:
   browser.visit("http://www.youtube-mp3.org")
   browser.find_by_id('youtube-url').fill("https://www.youtube.com/watch?v=lgT1AidzRWM")
   browser.find_by_id('submit').click()

   if browser.is_element_present_by_id('dl_link'):
      time.sleep(2)
      browser.click_link_by_partial_text('Download')
      # browser.find_by_id('dl_link').click()
      print "Clicked Download"
      time.sleep(2)

这是我得到的错误:

Traceback (most recent call last):
  File "/Users/anon/Dropbox/Programs/Proj/splinter2.py", line 11, in <module>
    browser.click_link_by_partial_text('Download')
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/splinter/driver/__init__.py", line 332, in click_link_by_partial_text
    return self.find_link_by_partial_text(partial_text).first.click()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/splinter/driver/webdriver/__init__.py", line 539, in click
    self._element.click()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/selenium/webdriver/remote/webelement.py", line 74, in click
    self._execute(Command.CLICK_ELEMENT)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/selenium/webdriver/remote/webelement.py", line 457, in _execute
    return self._parent.execute(command, params)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 233, in execute
    self.error_handler.check_response(response)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/selenium/webdriver/remote/errorhandler.py", line 194, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.ElementNotVisibleException: Message: Element is not currently visible and so may not be interacted with
Stacktrace:
    at fxdriver.preconditions.visible (file:///var/folders/wj/t56fgsms4rdcgptcy94k2w8m0000gn/T/tmpAVUrd2/extensions/fxdriver@googlecode.com/components/command-processor.js:10092)
    at DelayedCommand.prototype.checkPreconditions_ (file:///var/folders/wj/t56fgsms4rdcgptcy94k2w8m0000gn/T/tmpAVUrd2/extensions/fxdriver@googlecode.com/components/command-processor.js:12644)
    at DelayedCommand.prototype.executeInternal_/h (file:///var/folders/wj/t56fgsms4rdcgptcy94k2w8m0000gn/T/tmpAVUrd2/extensions/fxdriver@googlecode.com/components/command-processor.js:12661)
    at DelayedCommand.prototype.executeInternal_ (file:///var/folders/wj/t56fgsms4rdcgptcy94k2w8m0000gn/T/tmpAVUrd2/extensions/fxdriver@googlecode.com/components/command-processor.js:12666)
    at DelayedCommand.prototype.execute/< (file:///var/folders/wj/t56fgsms4rdcgptcy94k2w8m0000gn/T/tmpAVUrd2/extensions/fxdriver@googlecode.com/components/command-processor.js:12608)
[Finished in 7.2s with exit code 1]
[shell_cmd: python -u "/Users/anon/Dropbox/Programs/Proj/splinter2.py"]
[dir: /Users/anon/Dropbox/Programs/Proj]
[path: /usr/bin:/bin:/usr/sbin:/sbin]

我已经用相同的标题(错误:“元素当前不可见，因此可能无法与selenuim交互”)标题检查过其他问题，但是由于 Download按钮在我看来是可见的，因此我仍然无法解决此问题。

任何帮助将非常感激

编辑:

每当我尝试使用 browser = Browser('firefox', profile=profile)设置配置文件时，都会出现以下错误:

Traceback (most recent call last):
  File "/Users/adb/Dropbox/Programs/Proj/Youtube Playlist MP3/splinter2.py", line 11, in <module>
    browser = Browser('firefox', profile=profile)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/splinter/browser.py", line 63, in Browser
    return driver(*args, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/splinter/driver/webdriver/firefox.py", line 23, in __init__
    firefox_profile = FirefoxProfile(profile)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/selenium/webdriver/firefox/firefox_profile.py", line 77, in __init__
    ignore=shutil.ignore_patterns("parent.lock", "lock", ".parentlock"))
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 171, in copytree
    names = os.listdir(src)
TypeError: coercing to Unicode: need string or buffer, FirefoxProfile found

Answer 1

当我使用browser.find_by_id('dl_link')。click()时，我的代码执行时没有任何错误，但browser.click_link_by_partial_text('Download')抛出了？

因为您与“静态”元素互动。

当您点击“转换视频”按钮时，您将刷新DOM。但是您的驱动程序仍然可以在旧DOM上运行。这就是为什么您找不到使用 browser.click_link_by_partial_text('Download')的原因

启动时，不会下载文件。为什么？

可能是因为有一个弹出窗口询问您是否要保存并执行它。 Check this out