text: import requests
  
  api_url = 'https://api.pitcher.com'
  pitcher_file_categories = ['presentation', 'zip', 'interface']
  
  
  def request(method, url, token=None, **kwargs):
      return getattr(requests, method)(
          api_url + url,
          headers={'Authorization': 'Token %s' % token} if token else None,
          **kwargs
      )
  
  
  def authenticate(username, password):
      res = request('post', '/auth/user/', json={
          'username': username,
          'password': password
      })
  
      if res.status_code != 200:
          raise ValueError
  
      return res.json().get('token')
  