Plugin cleanup and tweaks

plugins/youtube_download/yt_dlp/extractor/linuxacademy.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import json
 import random
 
@@ -75,18 +73,10 @@ class LinuxAcademyIE(InfoExtractor):
     _CLIENT_ID = 'KaWxNn1C2Gc7n83W9OFeXltd8Utb5vvx'
     _NETRC_MACHINE = 'linuxacademy'
 
-    def _real_initialize(self):
-        self._login()
-
-    def _login(self):
-        username, password = self._get_login_info()
-        if username is None:
-            return
-
+    def _perform_login(self, username, password):
         def random_string():
-            return ''.join([
-                random.choice('0123456789ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvwxyz-._~')
-                for _ in range(32)])
+            return ''.join(random.choices(
+                '0123456789ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvwxyz-._~', k=32))
 
         webpage, urlh = self._download_webpage_handle(
             self._AUTHORIZE_URL, None, 'Downloading authorize page', query={
@@ -227,7 +217,6 @@ class LinuxAcademyIE(InfoExtractor):
         formats = self._extract_m3u8_formats(
             m3u8_url, item_id, 'mp4', entry_protocol='m3u8_native',
             m3u8_id='hls')
-        self._sort_formats(formats)
         info = {
             'id': item_id,
             'formats': formats,