[fix] #59 fix pylint warnings

Makefile

@@ -20,9 +20,9 @@ mypy:
 
 # check code errors
 pylint:
-	pylint --disable=C,R0902,R0903,R0904,R0912,R0913,R0914,R0915,W0613 --enable=C0121,C0202,C0321 --jobs=0 duniterpy/
-	pylint --disable=C,R0902,R0903,R0904,R0912,R0913,R0914,R0915,W0613 --enable=C0121,C0202,C0321 --jobs=0 tests/
-	pylint --disable=C,R0902,R0903,R0904,R0912,R0913,R0914,R0915,W0613 --enable=C0121,C0202,C0321 --jobs=0 examples/
+	pylint --disable=C,R0902,R0903,R0904,R0912,R0913,R0914,R0915,W1202,W0613 --enable=C0121,C0202,C0321 --jobs=0 duniterpy/
+	pylint --disable=C,R0902,R0903,R0904,R0912,R0913,R0914,R0915,W1202,W0613 --enable=C0121,C0202,C0321 --jobs=0 tests/
+	pylint --disable=C,R0902,R0903,R0904,R0912,R0913,R0914,R0915,W1202,W0613 --enable=C0121,C0202,C0321 --jobs=0 examples/
 
 # check format
 check-format:

duniterpy/api/client.py

@@ -192,13 +192,13 @@ class API:
         url = self.reverse_url(self.connection_handler.http_scheme, path)
 
         if data is not None:
-            logging.debug("{0} : {1}, data={2}".format(method, url, data))
+            logging.debug(f"{method} : {url}, data={data}")
         elif _json is not None:
-            logging.debug("{0} : {1}, json={2}".format(method, url, _json))
+            logging.debug(f"{method} : {url}, json={_json}")
             # http header to send json body
             self.headers['Content-Type'] = 'application/json; charset=utf-8'
         else:
-            logging.debug("{0} : {1}".format(method, url))
+            logging.debug(f"{method} : {url}")
 
         response = await self.connection_handler.session.request(
             method,
@@ -320,12 +320,13 @@ class Client:
             await parse_response(response, schema)
 
         # return the chosen type
-        if rtype == RESPONSE_AIOHTTP:
-            return response
-        elif rtype == RESPONSE_TEXT:
-            return await response.text()
+        result = response  # type: Any
+        if rtype == RESPONSE_TEXT:
+            result = await response.text()
         elif rtype == RESPONSE_JSON:
-            return await response.json()
+            result = await response.json()
+
+        return result
 
     async def query(self, query: str, variables: Optional[dict] = None, rtype: str = RESPONSE_JSON,
                     schema: Optional[dict] = None) -> Any: