Refactor client internal calls to allow keepalive

CHANGELOG.md

@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+ - Allow session keepalive
+
 ## [2.6.1] - 2020-01-13
 
 ### Fixed

spotipy/client.py

@@ -113,44 +113,39 @@ def _internal_call(self, method, url, payload, params):
 
         if self.trace_out:
             print(url)
-        r = self._session.request(
-            method,
-            url,
-            headers=headers,
-            proxies=self.proxies,
-            **args)
 
-        if self.trace:  # pragma: no cover
-            print()
-            print('headers', headers)
-            print('http status', r.status_code)
-            print(method, r.url)
-            if payload:
-                print("DATA", json.dumps(payload))
-
-        try:
-            r.raise_for_status()
-        except BaseException:
-            if r.text and len(r.text) > 0 and r.text != 'null':
-                msg = '%s:\n %s' % (r.url, r.json()['error']['message'])
-                raise SpotifyException(r.status_code,
-                                       -1, msg,
-                                       headers=r.headers)
-            else:
-                raise SpotifyException(r.status_code,
-                                       -1, '%s:\n %s' % (r.url, 'error'),
-                                       headers=r.headers)
-        finally:
-            if hasattr(r, "connection"):
-                r.connection.close()
-        if r.text and len(r.text) > 0 and r.text != 'null':
-            results = r.json()
+        with self._session.request(method, url, headers=headers,
+                                   proxies=self.proxies, **args) as r:
+
             if self.trace:  # pragma: no cover
-                print('RESP', results)
                 print()
-            return results
-        else:
-            return None
+                print('Request headers:', headers)
+                print('Response headers:', r.headers)
+                print('HTTP status', r.status_code)
+                print(method, r.url)
+                if payload:
+                    print("Data", json.dumps(payload))
+
+            try:
+                r.raise_for_status()
+            except BaseException:
+                try:
+                    msg = r.json()['error']['message']
+                except BaseException:
+                    msg = 'error'
+                raise SpotifyException(r.status_code,
+                                       -1, '%s:\n %s' % (r.url, msg),
+                                       headers=r.headers)
+
+            try:
+                results = r.json()
+            except BaseException:
+                results = None
+
+        if self.trace:  # pragma: no cover
+            print('Response:', results)
+            print()
+        return results
 
     def _get(self, url, args=None, payload=None, **kwargs):
         if args:

tests/tests.py

@@ -203,6 +203,7 @@ def test_custom_requests_session(self):
         self.assertTrue(
             with_custom_session.user(
                 user="akx")["uri"] == "spotify:user:akx")
+        sess.close()
 
     def test_force_no_requests_session(self):
         with_no_session = Spotify(auth=self.token, requests_session=False)