errore while use youtube-dl

[w3a-coder]

File "/usr/lib/python2.7/runpy.py", line 174, in _run_module_as_main
"main", fname, loader, pkg_name)
File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
exec code in run_globals
File "/usr/local/bin/youtube-dl/main.py", line 16, in
File "/usr/local/bin/youtube-dl/youtube_dl/init.py", line 15, in
File "/usr/local/bin/youtube-dl/youtube_dl/options.py", line 8, in
File "/usr/local/bin/youtube-dl/youtube_dl/downloader/init.py", line 3, in
File "/usr/local/bin/youtube-dl/youtube_dl/downloader/common.py", line 9, in
File "/usr/local/bin/youtube-dl/youtube_dl/compat.py", line 57, in
File "/usr/lib/python2.7/cookielib.py", line 32, in
import re, urlparse, copy, time, urllib
File "/usr/lib/python2.7/copy.py", line 52, in
import weakref
File "/usr/lib/python2.7/weakref.py", line 14, in
from _weakref import (
ImportError: cannot import name _remove_dead_weakref

[dstftw]

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