[cleanup] Fix linter and some typos

* Also remove inconsistent use of `"` in setup.py

setup.py

@@ -18,13 +18,13 @@ DESCRIPTION = 'Command-line program to download videos from YouTube.com and many
 LONG_DESCRIPTION = '\n\n'.join((
     'Official repository: <https://github.com/yt-dlp/yt-dlp>',
     '**PS**: Many links in this document will not work since this is a copy of the README.md from Github',
-    open("README.md", "r", encoding="utf-8").read()))
+    open('README.md', 'r', encoding='utf-8').read()))
 
 REQUIREMENTS = ['mutagen', 'pycryptodome']
 
 
 if len(sys.argv) >= 2 and sys.argv[1] == 'py2exe':
-    print("inv")
+    print('inv')
 else:
     files_spec = [
         ('share/bash-completion/completions', ['completions/bash/yt-dlp']),
@@ -67,17 +67,17 @@ class build_lazy_extractors(Command):
         )
 
 
-packages = find_packages(exclude=("youtube_dl", "test", "ytdlp_plugins"))
+packages = find_packages(exclude=('youtube_dl', 'test', 'ytdlp_plugins'))
 
 setup(
-    name="yt-dlp",
+    name='yt-dlp',
     version=__version__,
-    maintainer="pukkandan",
+    maintainer='pukkandan',
-    maintainer_email="pukkandan.ytdlp@gmail.com",
+    maintainer_email='pukkandan.ytdlp@gmail.com',
     description=DESCRIPTION,
     long_description=LONG_DESCRIPTION,
-    long_description_content_type="text/markdown",
+    long_description_content_type='text/markdown',
-    url="https://github.com/yt-dlp/yt-dlp",
+    url='https://github.com/yt-dlp/yt-dlp',
     packages=packages,
     install_requires=REQUIREMENTS,
     project_urls={
@@ -87,28 +87,28 @@ setup(
         #'Funding': 'https://donate.pypi.org',
     },
     classifiers=[
-        "Topic :: Multimedia :: Video",
+        'Topic :: Multimedia :: Video',
-        "Development Status :: 5 - Production/Stable",
+        'Development Status :: 5 - Production/Stable',
-        "Environment :: Console",
+        'Environment :: Console',
-        "Programming Language :: Python",
+        'Programming Language :: Python',
-        "Programming Language :: Python :: 2",
+        'Programming Language :: Python :: 2',
-        "Programming Language :: Python :: 2.6",
+        'Programming Language :: Python :: 2.6',
-        "Programming Language :: Python :: 2.7",
+        'Programming Language :: Python :: 2.7',
-        "Programming Language :: Python :: 3",
+        'Programming Language :: Python :: 3',
-        "Programming Language :: Python :: 3.2",
+        'Programming Language :: Python :: 3.2',
-        "Programming Language :: Python :: 3.3",
+        'Programming Language :: Python :: 3.3',
-        "Programming Language :: Python :: 3.4",
+        'Programming Language :: Python :: 3.4',
-        "Programming Language :: Python :: 3.5",
+        'Programming Language :: Python :: 3.5',
-        "Programming Language :: Python :: 3.6",
+        'Programming Language :: Python :: 3.6',
-        "Programming Language :: Python :: 3.7",
+        'Programming Language :: Python :: 3.7',
-        "Programming Language :: Python :: 3.8",
+        'Programming Language :: Python :: 3.8',
-        "Programming Language :: Python :: Implementation",
+        'Programming Language :: Python :: Implementation',
-        "Programming Language :: Python :: Implementation :: CPython",
+        'Programming Language :: Python :: Implementation :: CPython',
-        "Programming Language :: Python :: Implementation :: IronPython",
+        'Programming Language :: Python :: Implementation :: IronPython',
-        "Programming Language :: Python :: Implementation :: Jython",
+        'Programming Language :: Python :: Implementation :: Jython',
-        "Programming Language :: Python :: Implementation :: PyPy",
+        'Programming Language :: Python :: Implementation :: PyPy',
-        "License :: Public Domain",
+        'License :: Public Domain',
-        "Operating System :: OS Independent",
+        'Operating System :: OS Independent',
     ],
     python_requires='>=2.6',
 

yt_dlp/update.py

@@ -50,7 +50,7 @@ def update_self(to_screen, verbose, opener):
         return h.hexdigest()
 
     if not isinstance(globals().get('__loader__'), zipimporter) and not hasattr(sys, 'frozen'):
-        to_screen('It looks like you installed yt-dlp with a package manager, pip, setup.py or a tarball. Please use that to update.')
+        to_screen('It looks like you installed yt-dlp with a package manager, pip, setup.py or a tarball. Please use that to update')
         return
 
     # sys.executable is set to the full pathname of the exe-file for py2exe
@@ -66,7 +66,7 @@ def update_self(to_screen, verbose, opener):
     except Exception:
         if verbose:
             to_screen(encode_compat_str(traceback.format_exc()))
-        to_screen('ERROR: can\'t obtain versions info. Please try again later.')
+        to_screen('ERROR: can\'t obtain versions info. Please try again later')
         to_screen('Visit https://github.com/yt-dlp/yt-dlp/releases/latest')
         return
 
@@ -165,7 +165,7 @@ def update_self(to_screen, verbose, opener):
     echo.Waiting for file handle to be closed ...
     ping 127.0.0.1 -n 5 -w 1000 > NUL
     move /Y "%s.new" "%s" > NUL
-    echo.Updated yt-dlp to version %s.
+    echo.Updated yt-dlp to version %s
 )
 @start /b "" cmd /c del "%%~f0"&exit /b
                 ''' % (exe, exe, version_id))
@@ -212,7 +212,7 @@ def update_self(to_screen, verbose, opener):
             to_screen('ERROR: unable to overwrite current version')
             return
 
-    to_screen('Updated yt-dlp. Restart yt-dlp to use the new version.')
+    to_screen('Updated yt-dlp. Restart yt-dlp to use the new version')
 
 
 '''  # UNUSED