title: AttributeError: 'module' object has no attribute 'client' python dropbox api
body: <p>I'm starting with the python api dropbox ,I've copied the first example but I get an  error </p>
  
  <pre><code>import dropbox
  
  # Get your app key and secret from the Dropbox developer website
  app_key = 'MY_APP_KEY'
  app_secret = 'MY_APP_SECRET'
  
  flow = dropbox.client.DropboxOAuth2FlowNoRedirect(app_key, app_secret)
  </code></pre>
  
  <p>the dropbox object has not a client atribute but it's the same code  of the documentation.</p>
  
  <p>the traceback</p>
  
  <pre><code>/usr/bin/python2.7 /home/user/PycharmProjects/api/dropbox.py
  Traceback (most recent call last):
    File "/home/user/PycharmProjects/api/dropbox.py", line 3, in &lt;module&gt;
      import dropbox
    File "/home/user/PycharmProjects/api/dropbox.py", line 9, in &lt;module&gt;
      flow = dropbox.client.DropboxOAuth2FlowNoRedirect(app_key, app_secret)
  AttributeError: 'module' object has no attribute 'client'
  </code></pre>