RuntimeError: maximum recursion depth exceeded in cmp (generic information extractor, peekvids.com)

[ghost]

youtube-dl -v https://www.peekvids.com/watch?v=cAvbo9PSFJC                                                                                                                                                                                                                             [945/1940]
[debug] System config: [u'--recode-video=mp4', u'-f', u'bestvideo+bestaudio/best']                                                                        
[debug] User config: []                                                                                                                                   
[debug] Custom config: []                                                                                                                                 
[debug] Command-line args: [u'-v', u'https://www.peekvids.com/watch?v=cAvbo9PSFJC']                                                                       
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8                                                                                          
[debug] youtube-dl version 2017.10.07                                                                                                                     
[debug] Python version 2.7.10 - Darwin-17.0.0-x86_64-i386-64bit                                                                                           
[debug] exe versions: ffmpeg 3.3.4, ffprobe 3.3.4, rtmpdump 2.4                                                                                           
[debug] Proxy map: {'http': 'http://127.0.0.1:8118', 'https': 'http://127.0.0.1:8118'}                                                                    
[generic] watch?v=cAvbo9PSFJC: Requesting header                                                                                                          
WARNING: Falling back on generic information extractor.                                                                                                   
[generic] watch?v=cAvbo9PSFJC: Downloading webpage                                                                                                        
[generic] watch?v=cAvbo9PSFJC: Extracting information                                                                                                     
[generic] watch?v=cAvbo9PSFJC: Downloading MPD manifest                                                                                                   
Traceback (most recent call last):                                                                                                                        
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/runpy.py", line 162, in _run_module_as_main                                
    "__main__", fname, loader, pkg_name)                                                                                                                  
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/runpy.py", line 72, in _run_code                                           
    exec code in run_globals                                                                                                                              
  File "/usr/local/bin/youtube-dl/__main__.py", line 19, in <module>                                                                                      
  File "/usr/local/bin/youtube-dl/youtube_dl/__init__.py", line 465, in main                                                                              
  File "/usr/local/bin/youtube-dl/youtube_dl/__init__.py", line 455, in _real_main                                                                        
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1980, in download                                                                        
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 784, in extract_info                                                                     
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 434, in extract                                                                   
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/generic.py", line 2890, in _real_extract                                                           
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 2175, in _parse_html5_media_entries                                               
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 2145, in _media_formats                                                           
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 1745, in _extract_mpd_formats                                                     
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 532, in _download_webpage_handle                                                  
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 503, in _request_webpage                                                          
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 2190, in urlopen                                                                         
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 431, in open                                             
    response = self._open(req, data)                                                                                                                      
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 449, in _open                                            
    '_open', req)                                                                                                                                         
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 409, in _call_chain                                      
    result = func(*args)                                                                                                                                  
  File "/usr/local/bin/youtube-dl/youtube_dl/utils.py", line 1086, in https_open                                                                          
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 1194, in do_open                                         
    h.request(req.get_method(), req.get_selector(), req.data, headers)                                                                                    
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 296, in get_selector                                     
    return self.__r_host                                                                                                                                  
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__                                      
    return getattr(self, attr)                                                                                      
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__                                      
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
(...)
    return getattr(self, attr)                                                                                      
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)                                                                                      
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)                                                                                      
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)                                                                                      
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)                                                                                      
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)                                                                                      
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)                                                                                      
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)                                                                                      
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 255, in __getattr__
    return getattr(self, attr)                                                                                      
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 251, in __getattr__
    if attr[:12] == '_Request__r_':                                                                                 
RuntimeError: maximum recursion depth exceeded in cmp  

[yan12125]

This is a Python bug fixed in 2.7.12 (https://bugs.python.org/issue6500). You may want to use either official Python packages from https://www.python.org or third-party packages like Homebrew or Macports.