code: def send_request (operation, expression):
      
      
      base = 'https://newton.now.sh'
      url = '%s/%s/%s' % (base, operation, urllib.parse.quote(expression))
      
      with urllib.request.urlopen(url) as response:
          return handle_response(response)
docs: Send an HTTP GET request to the newton API
      operation: one of the API endpoints
      expression: the str for the given endpoint to evaluate