[cleanup] Minor fixes (See desc)

* [youtube] Fix `--youtube-skip-dash-manifest`
* [build] Use `$()` in `Makefile`. Closes #3684
* Fix bug in 385ffb467b
* Fix bug in 43d7f5a5d0
* [cleanup] Remove unnecessary `utf-8` from `str.encode`/`bytes.decode`
* [utils] LazyList: Expose unnecessarily "protected" attributes
and other minor cleanup

yt_dlp/downloader/external.py

@@ -299,7 +299,7 @@ class Aria2cFD(ExternalFD):
                 fragment_filename = '%s-Frag%d' % (os.path.basename(tmpfilename), frag_index)
                 url_list.append('%s\n\tout=%s' % (fragment['url'], fragment_filename))
             stream, _ = self.sanitize_open(url_list_file, 'wb')
-            stream.write('\n'.join(url_list).encode('utf-8'))
+            stream.write('\n'.join(url_list).encode())
             stream.close()
             cmd += ['-i', url_list_file]
         else:

yt_dlp/downloader/f4m.py

@@ -412,7 +412,7 @@ class F4mFD(FragmentFD):
                     if box_type == b'mdat':
                         self._append_fragment(ctx, box_data)
                         break
-            except (compat_urllib_error.HTTPError, ) as err:
+            except compat_urllib_error.HTTPError as err:
                 if live and (err.code == 404 or err.code == 410):
                     # We didn't keep up with the live window. Continue
                     # with the next available fragment.

yt_dlp/downloader/hls.py

@@ -329,7 +329,7 @@ class HlsFD(FragmentFD):
                             continue
                     block.write_into(output)
 
-                return output.getvalue().encode('utf-8')
+                return output.getvalue().encode()
 
             def fin_fragments():
                 dedup_window = extra_state.get('webvtt_dedup_window')
@@ -340,7 +340,7 @@ class HlsFD(FragmentFD):
                 for cue in dedup_window:
                     webvtt.CueBlock.from_json(cue).write_into(output)
 
-                return output.getvalue().encode('utf-8')
+                return output.getvalue().encode()
 
             self.download_and_append_fragments(
                 ctx, fragments, info_dict, pack_func=pack_fragment, finish_func=fin_fragments)

yt_dlp/downloader/http.py

@@ -150,7 +150,7 @@ class HttpFD(FileDownloader):
                     ctx.resume_len = 0
                     ctx.open_mode = 'wb'
                 ctx.data_len = ctx.content_len = int_or_none(ctx.data.info().get('Content-length', None))
-            except (compat_urllib_error.HTTPError, ) as err:
+            except compat_urllib_error.HTTPError as err:
                 if err.code == 416:
                     # Unable to resume (requested range not satisfiable)
                     try:
@@ -158,7 +158,7 @@ class HttpFD(FileDownloader):
                         ctx.data = self.ydl.urlopen(
                             sanitized_Request(url, request_data, headers))
                         content_length = ctx.data.info()['Content-Length']
-                    except (compat_urllib_error.HTTPError, ) as err:
+                    except compat_urllib_error.HTTPError as err:
                         if err.code < 500 or err.code >= 600:
                             raise
                     else:
@@ -268,7 +268,7 @@ class HttpFD(FileDownloader):
 
                     if self.params.get('xattr_set_filesize', False) and data_len is not None:
                         try:
-                            write_xattr(ctx.tmpfilename, 'user.ytdl.filesize', str(data_len).encode('utf-8'))
+                            write_xattr(ctx.tmpfilename, 'user.ytdl.filesize', str(data_len).encode())
                         except (XAttrUnavailableError, XAttrMetadataError) as err:
                             self.report_error('unable to set filesize xattr: %s' % str(err))
 

yt_dlp/downloader/ism.py

@@ -151,7 +151,7 @@ def write_piff_header(stream, params):
         sample_entry_payload += u16.pack(0x18)  # depth
         sample_entry_payload += s16.pack(-1)  # pre defined
 
-        codec_private_data = binascii.unhexlify(params['codec_private_data'].encode('utf-8'))
+        codec_private_data = binascii.unhexlify(params['codec_private_data'].encode())
         if fourcc in ('H264', 'AVC1'):
             sps, pps = codec_private_data.split(u32.pack(1))[1:]
             avcc_payload = u8.pack(1)  # configuration version

yt_dlp/downloader/mhtml.py

@@ -54,7 +54,7 @@ body > figure > img {
     def _escape_mime(s):
         return '=?utf-8?Q?' + (b''.join(
             bytes((b,)) if b >= 0x20 else b'=%02X' % b
-            for b in quopri.encodestring(s.encode('utf-8'), header=True)
+            for b in quopri.encodestring(s.encode(), header=True)
         )).decode('us-ascii') + '?='
 
     def _gen_cid(self, i, fragment, frag_boundary):
@@ -151,7 +151,7 @@ body > figure > img {
                 length=len(stub),
                 title=self._escape_mime(title),
                 stub=stub
-            ).encode('utf-8'))
+            ).encode())
             extra_state['header_written'] = True
 
         for i, fragment in enumerate(fragments):

yt_dlp/downloader/niconico.py

@@ -51,4 +51,4 @@ class NiconicoDmcFD(FileDownloader):
                 with heartbeat_lock:
                     timer[0].cancel()
                     download_complete = True
-            return success
+        return success

yt_dlp/downloader/websocket.py

@@ -19,7 +19,7 @@ class FFmpegSinkFD(FileDownloader):
         async def call_conn(proc, stdin):
             try:
                 await self.real_connection(stdin, info_dict)
-            except (BrokenPipeError, OSError):
+            except OSError:
                 pass
             finally:
                 with contextlib.suppress(OSError):

yt_dlp/downloader/youtube_live_chat.py

@@ -47,7 +47,7 @@ class YoutubeLiveChatFD(FragmentFD):
                     replay_chat_item_action = action['replayChatItemAction']
                     offset = int(replay_chat_item_action['videoOffsetTimeMsec'])
                 processed_fragment.extend(
-                    json.dumps(action, ensure_ascii=False).encode('utf-8') + b'\n')
+                    json.dumps(action, ensure_ascii=False).encode() + b'\n')
             if offset is not None:
                 continuation = try_get(
                     live_chat_continuation,
@@ -89,7 +89,7 @@ class YoutubeLiveChatFD(FragmentFD):
                     'isLive': True,
                 }
                 processed_fragment.extend(
-                    json.dumps(pseudo_action, ensure_ascii=False).encode('utf-8') + b'\n')
+                    json.dumps(pseudo_action, ensure_ascii=False).encode() + b'\n')
             continuation_data_getters = [
                 lambda x: x['continuations'][0]['invalidationContinuationData'],
                 lambda x: x['continuations'][0]['timedContinuationData'],
@@ -183,7 +183,7 @@ class YoutubeLiveChatFD(FragmentFD):
                     request_data['context']['clickTracking'] = {'clickTrackingParams': click_tracking_params}
                 headers = ie.generate_api_headers(ytcfg=ytcfg, visitor_data=visitor_data)
                 headers.update({'content-type': 'application/json'})
-                fragment_request_data = json.dumps(request_data, ensure_ascii=False).encode('utf-8') + b'\n'
+                fragment_request_data = json.dumps(request_data, ensure_ascii=False).encode() + b'\n'
                 success, continuation_id, offset, click_tracking_params = download_and_parse_fragment(
                     url, frag_index, fragment_request_data, headers)
             else: