fix(codacy): Fix codacy issues

Author: ehdsouza

watson_developer_cloud/watson_service.py

@@ -290,7 +290,7 @@ def set_username_and_password(self, username=None, password=None):
     def set_api_key(self, api_key):
         if api_key == 'YOUR API KEY':
             api_key = None
-        if api_key.startswith(ICP_PREFIX):
+        if api_key is not None and api_key.startswith(ICP_PREFIX):
             self.set_username_and_password(APIKEY, api_key)
             return
 

watson_developer_cloud/websocket/recognize_listener.py

@@ -53,14 +53,17 @@ def __init__(self, audio_source, options, callback, url, headers, http_proxy_hos
         )
         self.ws_client.run_forever(http_proxy_host=self.http_proxy_host, http_proxy_port=self.http_proxy_port)
 
-    def build_start_message(self, options):
+    @classmethod
+    def build_start_message(cls, options):
         options[ACTION] = START
         return options
 
-    def build_closing_message(self):
+    @classmethod
+    def build_closing_message(cls):
         return json.dumps({ACTION: STOP}).encode('utf8')
 
-    def extract_transcripts(self, alternatives):
+    @classmethod
+    def extract_transcripts(cls, alternatives):
         transcripts = []
         for alternative in alternatives:
             transcript = {}