[cleanup] Misc cleanup

yt_dlp/utils.py

@@ -1445,6 +1445,10 @@ class YoutubeDLCookieJar(compat_cookiejar.MozillaCookieJar):
             filename = os.fspath(filename)
         self.filename = filename
 
+    @staticmethod
+    def _true_or_false(cndn):
+        return 'TRUE' if cndn else 'FALSE'
+
     @staticmethod
     def is_path(file):
         return isinstance(file, (str, bytes, os.PathLike))
@@ -1459,57 +1463,47 @@ class YoutubeDLCookieJar(compat_cookiejar.MozillaCookieJar):
                 file.truncate(0)
             yield file
 
-    def save(self, filename=None, ignore_discard=False, ignore_expires=False):
+    def _really_save(self, f, ignore_discard=False, ignore_expires=False):
+        now = time.time()
+        for cookie in self:
+            if (not ignore_discard and cookie.discard
+                    or not ignore_expires and cookie.is_expired(now)):
+                continue
+            name, value = cookie.name, cookie.value
+            if value is None:
+                # cookies.txt regards 'Set-Cookie: foo' as a cookie
+                # with no name, whereas http.cookiejar regards it as a
+                # cookie with no value.
+                name, value = '', name
+            f.write('%s\n' % '\t'.join((
+                cookie.domain,
+                self._true_or_false(cookie.domain.startswith('.')),
+                cookie.path,
+                self._true_or_false(cookie.secure),
+                str_or_none(cookie.expires, default=''),
+                name, value
+            )))
+
+    def save(self, filename=None, *args, **kwargs):
         """
         Save cookies to a file.
+        Code is taken from CPython 3.6
+        https://github.com/python/cpython/blob/8d999cbf4adea053be6dbb612b9844635c4dfb8e/Lib/http/cookiejar.py#L2091-L2117 """
 
-        Most of the code is taken from CPython 3.8 and slightly adapted
-        to support cookie files with UTF-8 in both python 2 and 3.
-        """
         if filename is None:
             if self.filename is not None:
                 filename = self.filename
             else:
                 raise ValueError(compat_cookiejar.MISSING_FILENAME_TEXT)
 
-        # Store session cookies with `expires` set to 0 instead of an empty
-        # string
+        # Store session cookies with `expires` set to 0 instead of an empty string
         for cookie in self:
             if cookie.expires is None:
                 cookie.expires = 0
 
         with self.open(filename, write=True) as f:
             f.write(self._HEADER)
-            now = time.time()
-            for cookie in self:
-                if not ignore_discard and cookie.discard:
-                    continue
-                if not ignore_expires and cookie.is_expired(now):
-                    continue
-                if cookie.secure:
-                    secure = 'TRUE'
-                else:
-                    secure = 'FALSE'
-                if cookie.domain.startswith('.'):
-                    initial_dot = 'TRUE'
-                else:
-                    initial_dot = 'FALSE'
-                if cookie.expires is not None:
-                    expires = compat_str(cookie.expires)
-                else:
-                    expires = ''
-                if cookie.value is None:
-                    # cookies.txt regards 'Set-Cookie: foo' as a cookie
-                    # with no name, whereas http.cookiejar regards it as a
-                    # cookie with no value.
-                    name = ''
-                    value = cookie.name
-                else:
-                    name = cookie.name
-                    value = cookie.value
-                f.write(
-                    '\t'.join([cookie.domain, initial_dot, cookie.path,
-                               secure, expires, name, value]) + '\n')
+            self._really_save(f, *args, **kwargs)
 
     def load(self, filename=None, ignore_discard=False, ignore_expires=False):
         """Load cookies from a file."""