Update coding style after pycodestyle 2.1.0

In pycodestyle 2.1.0, E305 was introduced, which requires two blank
lines after top level declarations, too.

See https://github.com/PyCQA/pycodestyle/issues/400

See also #10689; thanks @stepshal for first mentioning this issue and
initial patches

devscripts/bash-completion.py

@@ -25,5 +25,6 @@ def build_completion(opt_parser):
         filled_template = template.replace("{{flags}}", " ".join(opts_flag))
         f.write(filled_template)
 
+
 parser = youtube_dl.parseOpts()[0]
 build_completion(parser)

devscripts/fish-completion.py

@@ -44,5 +44,6 @@ def build_completion(opt_parser):
     with open(FISH_COMPLETION_FILE, 'w') as f:
         f.write(filled_template)
 
+
 parser = youtube_dl.parseOpts()[0]
 build_completion(parser)

devscripts/generate_aes_testdata.py

@@ -23,6 +23,7 @@ def openssl_encode(algo, key, iv):
     out, _ = prog.communicate(secret_msg)
     return out
 
+
 iv = key = [0x20, 0x15] + 14 * [0]
 
 r = openssl_encode('aes-128-cbc', key, iv)

devscripts/gh-pages/update-sites.py

@@ -32,5 +32,6 @@ def main():
     with open('supportedsites.html', 'w', encoding='utf-8') as sitesf:
         sitesf.write(template)
 
+
 if __name__ == '__main__':
     main()

devscripts/make_contributing.py

@@ -28,5 +28,6 @@ def main():
     with io.open(outfile, 'w', encoding='utf-8') as outf:
         outf.write(out)
 
+
 if __name__ == '__main__':
     main()

devscripts/make_lazy_extractors.py

@@ -59,6 +59,7 @@ def build_lazy_ie(ie, name):
         s += make_valid_template.format(valid_url=ie._make_valid_url())
     return s
 
+
 # find the correct sorting and add the required base classes so that sublcasses
 # can be correctly created
 classes = _ALL_CLASSES[:-1]

devscripts/make_supportedsites.py

@@ -41,5 +41,6 @@ def main():
     with io.open(outfile, 'w', encoding='utf-8') as outf:
         outf.write(out)
 
+
 if __name__ == '__main__':
     main()

devscripts/prepare_manpage.py

@@ -74,5 +74,6 @@ def filter_options(readme):
 
     return ret
 
+
 if __name__ == '__main__':
     main()

devscripts/zsh-completion.py

@@ -44,5 +44,6 @@ def build_completion(opt_parser):
     with open(ZSH_COMPLETION_FILE, "w") as f:
         f.write(template)
 
+
 parser = youtube_dl.parseOpts()[0]
 build_completion(parser)

test/test_InfoExtractor.py

@@ -84,5 +84,6 @@ class TestInfoExtractor(unittest.TestCase):
         self.assertRaises(ExtractorError, self.ie._download_json, uri, None)
         self.assertEqual(self.ie._download_json(uri, None, fatal=False), None)
 
+
 if __name__ == '__main__':
     unittest.main()

test/test_aes.py

@@ -51,5 +51,6 @@ class TestAES(unittest.TestCase):
         decrypted = (aes_decrypt_text(encrypted, password, 32))
         self.assertEqual(decrypted, self.secret_msg)
 
+
 if __name__ == '__main__':
     unittest.main()

test/test_download.py

@@ -60,6 +60,7 @@ def _file_md5(fn):
     with open(fn, 'rb') as f:
         return hashlib.md5(f.read()).hexdigest()
 
+
 defs = gettestcases()
 
 
@@ -217,6 +218,7 @@ def generator(test_case):
 
     return test_template
 
+
 # And add them to TestDownload
 for n, test_case in enumerate(defs):
     test_method = generator(test_case)

test/test_execution.py

@@ -39,5 +39,6 @@ class TestExecution(unittest.TestCase):
         _, stderr = p.communicate()
         self.assertFalse(stderr)
 
+
 if __name__ == '__main__':
     unittest.main()

test/test_http.py

@@ -169,5 +169,6 @@ class TestProxy(unittest.TestCase):
         # b'xn--fiq228c' is '中文'.encode('idna')
         self.assertEqual(response, 'normal: http://xn--fiq228c.tw/')
 
+
 if __name__ == '__main__':
     unittest.main()

test/test_iqiyi_sdk_interpreter.py

@@ -43,5 +43,6 @@ class TestIqiyiSDKInterpreter(unittest.TestCase):
         ie._login()
         self.assertTrue('unable to log in:' in logger.messages[0])
 
+
 if __name__ == '__main__':
     unittest.main()

test/test_jsinterp.py

@@ -112,5 +112,6 @@ class TestJSInterpreter(unittest.TestCase):
         ''')
         self.assertEqual(jsi.call_function('z'), 5)
 
+
 if __name__ == '__main__':
     unittest.main()

test/test_utils.py

@@ -1075,5 +1075,6 @@ The first line
         self.assertEqual(get_element_by_class('foo', html), 'nice')
         self.assertEqual(get_element_by_class('no-such-class', html), None)
 
+
 if __name__ == '__main__':
     unittest.main()

test/test_verbose_output.py

@@ -66,5 +66,6 @@ class TestVerboseOutput(unittest.TestCase):
         self.assertTrue(b'-p' in serr)
         self.assertTrue(b'secret' not in serr)
 
+
 if __name__ == '__main__':
     unittest.main()

test/test_write_annotations.py

@@ -24,6 +24,7 @@ class YoutubeDL(youtube_dl.YoutubeDL):
         super(YoutubeDL, self).__init__(*args, **kwargs)
         self.to_stderr = self.to_screen
 
+
 params = get_params({
     'writeannotations': True,
     'skip_download': True,
@@ -74,5 +75,6 @@ class TestAnnotations(unittest.TestCase):
     def tearDown(self):
         try_rm(ANNOTATIONS_FILE)
 
+
 if __name__ == '__main__':
     unittest.main()

test/test_youtube_lists.py

@@ -66,5 +66,6 @@ class TestYoutubeLists(unittest.TestCase):
         for entry in result['entries']:
             self.assertTrue(entry.get('title'))
 
+
 if __name__ == '__main__':
     unittest.main()

test/test_youtube_signature.py

@@ -114,6 +114,7 @@ def make_tfunc(url, stype, sig_input, expected_sig):
     test_func.__name__ = str('test_signature_' + stype + '_' + test_id)
     setattr(TestSignature, test_func.__name__, test_func)
 
+
 for test_spec in _TESTS:
     make_tfunc(*test_spec)
 

youtube_dl/__init__.py

@@ -449,4 +449,5 @@ def main(argv=None):
     except KeyboardInterrupt:
         sys.exit('\nERROR: Interrupted by user')
 
+
 __all__ = ['main', 'YoutubeDL', 'gen_extractors', 'list_extractors']

youtube_dl/aes.py

@@ -174,6 +174,7 @@ def aes_decrypt_text(data, password, key_size_bytes):
 
     return plaintext
 
+
 RCON = (0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36)
 SBOX = (0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5, 0x30, 0x01, 0x67, 0x2B, 0xFE, 0xD7, 0xAB, 0x76,
         0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0, 0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0,
@@ -328,4 +329,5 @@ def inc(data):
             break
     return data
 
+
 __all__ = ['aes_encrypt', 'key_expansion', 'aes_ctr_decrypt', 'aes_cbc_decrypt', 'aes_decrypt_text']

youtube_dl/compat.py

@@ -2491,6 +2491,7 @@ class _TreeBuilder(etree.TreeBuilder):
     def doctype(self, name, pubid, system):
         pass
 
+
 if sys.version_info[0] >= 3:
     def compat_etree_fromstring(text):
         return etree.XML(text, parser=etree.XMLParser(target=_TreeBuilder()))
@@ -2787,6 +2788,7 @@ def workaround_optparse_bug9161():
             return real_add_option(self, *bargs, **bkwargs)
         optparse.OptionGroup.add_option = _compat_add_option
 
+
 if hasattr(shutil, 'get_terminal_size'):  # Python >= 3.3
     compat_get_terminal_size = shutil.get_terminal_size
 else:

youtube_dl/downloader/external.py

@@ -293,6 +293,7 @@ class FFmpegFD(ExternalFD):
 class AVconvFD(FFmpegFD):
     pass
 
+
 _BY_NAME = dict(
     (klass.get_basename(), klass)
     for name, klass in globals().items()

youtube_dl/socks.py

@@ -103,6 +103,7 @@ class ProxyType(object):
     SOCKS4A = 1
     SOCKS5 = 2
 
+
 Proxy = collections.namedtuple('Proxy', (
     'type', 'host', 'port', 'username', 'password', 'remote_dns'))
 

youtube_dl/swfinterp.py

@@ -115,6 +115,8 @@ def _u30(reader):
     res = _read_int(reader)
     assert res & 0xf0000000 == 0
     return res
+
+
 _u32 = _read_int
 
 
@@ -176,6 +178,7 @@ class _Undefined(object):
         return 'undefined'
     __repr__ = __str__
 
+
 undefined = _Undefined()