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Do not mutate default arguments

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In this case, it looks rather harmless (since the conditions for --restrict-filenames should not change while a process is running), but just to be sure.
This also simplifies the interface for callers, who can just pass in the idiomatic None for "I don't care, whatever is the default".
This commit is contained in:
Philipp Hagemeister 2013-11-29 15:25:09 +01:00
parent 17769d5a6c
commit a3fb4675fb
1 changed files with 2 additions and 2 deletions
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4
youtube_dl/YoutubeDL.py
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@ -146,7 +146,7 @@ class YoutubeDL(object):
_num_downloads = None _num_downloads = None
_screen_file = None _screen_file = None
def __init__(self, params={}): def __init__(self, params=None):
"""Create a FileDownloader object with the given options.""" """Create a FileDownloader object with the given options."""
self._ies = [] self._ies = []
self._ies_instances = {} self._ies_instances = {}
@ -155,7 +155,7 @@ def __init__(self, params={}):
self._download_retcode = 0 self._download_retcode = 0
self._num_downloads = 0 self._num_downloads = 0
self._screen_file = [sys.stdout, sys.stderr][params.get('logtostderr', False)] self._screen_file = [sys.stdout, sys.stderr][params.get('logtostderr', False)]
self.params = params self.params = {} if params is None else params
if (sys.version_info >= (3,) and sys.platform != 'win32' and if (sys.version_info >= (3,) and sys.platform != 'win32' and
sys.getfilesystemencoding() in ['ascii', 'ANSI_X3.4-1968'] sys.getfilesystemencoding() in ['ascii', 'ANSI_X3.4-1968']