Use Dryscrape to Log in to Facebook

Question

I am trying to use Drcscrape to log in to Facebook, but I am getting this error.

I am using OSX

Traceback (most recent call last):
  File "/Users/noppanit/.virtualenvs/envpy3/lib/python3.4/site-packages/webkit_server.py", line 420, in __init__
    self._port = int(re.search(b"port: (\d+)", output).group(1))
AttributeError: 'NoneType' object has no attribute 'group'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "facebook_scraper.py", line 40, in <module>
    sess = dryscrape.Session(base_url = 'https://www.facebook.com')
  File "/Users/noppanit/.virtualenvs/envpy3/lib/python3.4/site-packages/dryscrape/session.py", line 22, in __init__
    self.driver = driver or DefaultDriver()
  File "/Users/noppanit/.virtualenvs/envpy3/lib/python3.4/site-packages/dryscrape/driver/webkit.py", line 30, in __init__
    super(Driver, self).__init__(**kw)
  File "/Users/noppanit/.virtualenvs/envpy3/lib/python3.4/site-packages/webkit_server.py", line 230, in __init__
    self.conn = connection or ServerConnection()
  File "/Users/noppanit/.virtualenvs/envpy3/lib/python3.4/site-packages/webkit_server.py", line 507, in __init__
    self._sock = (server or get_default_server()).connect()
  File "/Users/noppanit/.virtualenvs/envpy3/lib/python3.4/site-packages/webkit_server.py", line 450, in get_default_server
    _default_server = Server()
  File "/Users/noppanit/.virtualenvs/envpy3/lib/python3.4/site-packages/webkit_server.py", line 427, in __init__
    raise WebkitServerError("webkit-server failed to start. Output:\n" + err)
webkit_server.WebkitServerError: webkit-server failed to start. Output:
dyld: Library not loaded: @rpath/./libQtWebKit.4.dylib
  Referenced from: /Users/noppanit/.virtualenvs/envpy3/lib/python3.4/site-packages/webkit_server
  Reason: image not found

This is the code for the fragment.

import dryscrape

# make sure you have xvfb installed
dryscrape.start_xvfb()

# set up a web scraping session
sess = dryscrape.Session(base_url = 'https://www.facebook.com')

# we don't need images
sess.set_attribute('auto_load_images', False)

# visit homepage and search for a term
sess.visit('/')
q = sess.at_xpath('//*[@id="email"]')
q.set('email')
q = sess.at_xpath('//*[@id="pass"]')
q.set("password")
login_button = sess.at_xpath('//*[@id="u_0_x"]')
login_button.click()

# save a screenshot of the web page
sess.render('facebook.png')
print("Screenshot written to 'facebook.png'")

Answer 1

Try with the input name, it works fine because the identifier changed every time the page was refreshed