I am writing a simple flask service that queries solr , get the results and renders it on results page. This is my first attempt at writing services using flask. Any suggestions would be appreciated.

I have following questions:

• I do not want to allow any other actions except get, what is the best way to handle that.
• Any suggestions on how to handle exceptions, currently referring to http://flask.pocoo.org/docs/0.12/errorhandling/.

Following is the structure of my application.

\webapp   search.py   solr_search.py   \static      -\css      -\js   \templates 

solr_search.py

from SolrClient import SolrClient  class SolrSearchFactory:     def __init__(self,host : str, port:int):         self.host = host         self.port = port      def create(self):         print(self.host,self.port)         return SolrClient("http://"+self.host+":"+self.port+"/solr")   class SolrQuery:     def __init__(self,solr_search_factory : SolrSearchFactory, index_name):         self.solr_factory = solr_search_factory         self.index = index_name         self.instance = self.solr_factory.create()      def query_solr(self,dict_q):         return self.instance.query(self.index,dict_q) 

search.py

dotenv_path = join(dirname(__file__), '.env') load_dotenv(dotenv_path)  #dotenv.load() solr_host = os.environ.get('SOLR_HOST') solr_port = os.environ.get('SOLR_PORT')  app = Flask(__name__)  @app.route('/search/', methods=['get']) def search_solr():     q = request.args.get('q', None) # use default value repalce 'None'     page = request.args.get('page', 0)     size = request.args.get('size',10)      so, sq = None, None     so = SolrSearchFactory(solr_host,solr_port)      sq = SolrQuery(so, 'techproducts')     res = (sq.query_solr({         'q':'name:Test',         'facet':True,         'fl':'id'      }))       return render_template('search.html', results=res.get_json(), query = q) 

Thanks