Do not mutate default arguments

[youtube-dl] / youtube_dl / YoutubeDL.py

diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index 30ba94666a642c45bfc03af75eb09019c04ae9ad..b822930cbe358226c70b514287509d391adc116c 100644 (file)
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -126,7 +126,7 @@ class YoutubeDL(object):
     noplaylist:        Download single video instead of a playlist if in doubt.
     age_limit:         An integer representing the user's age in years.
                        Unsuitable videos for the given age are skipped.
-    downloadarchive:   File name of a file where all downloads are recorded.
+    download_archive:   File name of a file where all downloads are recorded.
                        Videos already present in the file are not downloaded
                        again.
     cookiefile:        File name where cookies should be read from and dumped to.
@@ -146,7 +146,7 @@ class YoutubeDL(object):
     _num_downloads = None
     _screen_file = None
 
-    def __init__(self, params):
+    def __init__(self, params=None):
         """Create a FileDownloader object with the given options."""
         self._ies = []
         self._ies_instances = {}
@@ -155,6 +155,7 @@ class YoutubeDL(object):
         self._download_retcode = 0
         self._num_downloads = 0
         self._screen_file = [sys.stdout, sys.stderr][params.get('logtostderr', False)]
+        self.params = {} if params is None else params
 
         if (sys.version_info >= (3,) and sys.platform != 'win32' and
                 sys.getfilesystemencoding() in ['ascii', 'ANSI_X3.4-1968']
@@ -164,12 +165,11 @@ class YoutubeDL(object):
                 u'Assuming --restrict-filenames since file system encoding '
                 u'cannot encode all charactes. '
                 u'Set the LC_ALL environment variable to fix this.')
-            params['restrictfilenames'] = True
+            self.params['restrictfilenames'] = True
 
-        self.params = params
         self.fd = FileDownloader(self, self.params)
 
-        if '%(stitle)s' in self.params['outtmpl']:
+        if '%(stitle)s' in self.params.get('outtmpl', ''):
             self.report_warning(u'%(stitle)s is deprecated. Use the %(title)s and the --restrict-filenames flag(which also secures %(uploader)s et al) instead.')
 
         self._setup_opener()
@@ -258,10 +258,6 @@ class YoutubeDL(object):
         if self.params.get('cookiefile') is not None:
             self.cookiejar.save()
 
-    def fixed_template(self):
-        """Checks if the output template is fixed."""
-        return (re.search(u'(?u)%\\(.+?\\)s', self.params['outtmpl']) is None)
-
     def trouble(self, message=None, tb=None):
         """Determine action to take when a download problem appears.
 
@@ -798,7 +794,9 @@ class YoutubeDL(object):
 
     def download(self, url_list):
         """Download a given list of URLs."""
-        if len(url_list) > 1 and self.fixed_template():
+        if (len(url_list) > 1 and
+                '%' not in self.params['outtmpl']
+                and self.params.get('max_downloads') != 1):
             raise SameFileError(self.params['outtmpl'])
 
         for url in url_list:
@@ -836,20 +834,26 @@ class YoutubeDL(object):
             except (IOError, OSError):
                 self.report_warning(u'Unable to remove downloaded video file')
 
-    def in_download_archive(self, info_dict):
-        fn = self.params.get('download_archive')
-        if fn is None:
-            return False
-        extractor = info_dict.get('extractor_id')
+    def _make_archive_id(self, info_dict):
+        # Future-proof against any change in case
+        # and backwards compatibility with prior versions
+        extractor = info_dict.get('extractor_key')
         if extractor is None:
             if 'id' in info_dict:
                 extractor = info_dict.get('ie_key')  # key in a playlist
         if extractor is None:
+            return None  # Incomplete video information
+        return extractor.lower() + u' ' + info_dict['id']
+
+    def in_download_archive(self, info_dict):
+        fn = self.params.get('download_archive')
+        if fn is None:
+            return False
+
+        vid_id = self._make_archive_id(info_dict)
+        if vid_id is None:
             return False  # Incomplete video information
-        # Future-proof against any change in case
-        # and backwards compatibility with prior versions
-        extractor = extractor.lower()
-        vid_id = extractor + u' ' + info_dict['id']
+
         try:
             with locked_file(fn, 'r', encoding='utf-8') as archive_file:
                 for line in archive_file:
@@ -864,12 +868,15 @@ class YoutubeDL(object):
         fn = self.params.get('download_archive')
         if fn is None:
             return
-        vid_id = info_dict['extractor'] + u' ' + info_dict['id']
+        vid_id = self._make_archive_id(info_dict)
+        assert vid_id
         with locked_file(fn, 'a', encoding='utf-8') as archive_file:
             archive_file.write(vid_id + u'\n')
 
     @staticmethod
     def format_resolution(format, default='unknown'):
+        if format.get('vcodec') == 'none':
+            return 'audio only'
         if format.get('_resolution') is not None:
             return format['_resolution']
         if format.get('height') is not None:
@@ -886,7 +893,8 @@ class YoutubeDL(object):
             res = u''
             if fdict.get('format_note') is not None:
                 res += fdict['format_note'] + u' '
-            if fdict.get('vcodec') is not None:
+            if (fdict.get('vcodec') is not None and
+                    fdict.get('vcodec') != 'none'):
                 res += u'%-5s' % fdict['vcodec']
             elif fdict.get('vbr') is not None:
                 res += u'video'
@@ -961,7 +969,7 @@ class YoutubeDL(object):
                 proxy_map.update(handler.proxies)
         write_string(u'[debug] Proxy map: ' + compat_str(proxy_map) + u'\n')
 
-    def _setup_opener(self, timeout=300):
+    def _setup_opener(self, timeout=20):
         opts_cookiefile = self.params.get('cookiefile')
         opts_proxy = self.params.get('proxy')