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PORuntimeError: maximum recursion depth exceeded : why?
 

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  1. PORuntimeError: maximum recursion depth exceeded : why?
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    <p>I created a subclass of the Django File object to take care of remote file. I also wanted to make a lazy version by creating a RemoteFileLazy subclassing the Lazyobject class but it does not work as I expected. I get an error.</p> <pre><code>import urllib2 from django.core.files.base import File from django.utils.functional import LazyObject class RemoteFile(File): def __init__(self, url): super(RemoteFile, self).__init__(urllib2.urlopen(urllib2.Request(url))) def __str__(self): return 'Remote content' def __nonzero__(self): return True def open(self, mode=None): self.seek(0) def close(self): pass def chunks(self, chunk_size=None): # CHUNKS taking care of no known size! if not chunk_size: chunk_size = self.DEFAULT_CHUNK_SIZE if hasattr(self, 'seek'): self.seek(0) # Assume the pointer is at zero... counter = self.size while True: data = self.read(chunk_size) if not data: break yield data class RemoteFileLazy(LazyObject): def __init__(self, url): # # as said in the django code: For some reason, we have to inline LazyObject.__init__ here to avoid # recursion self._wrapped = None self.url = url def _setup(self): self._wrapped = RemoteFile(self.url) </code></pre> <p>When I run this code:</p> <pre><code>rfl = filehelper.RemoteFileLazy(url="http://www.google.fr") </code></pre> <p>I got this error:</p> <pre><code>RuntimeError: maximum recursion depth exceeded </code></pre> <p>Any idea ? I did not call LazyObject.<strong>init</strong> as it was mentioned in the django code though... I think the "self.url = url" in the <strong>init</strong> method triggers this error right ? So I cannot use a lazy object with attributes ?</p> <p>Thanks.</p> <p>Traceback:</p> <pre><code>c:\Users\Michael\Dropbox\development\tools\Portable Python 2.7.2.1-django1.3.1\App\lib\site-packages\django\utils\functional.pyc in __getattr__(self, name) 274 def __getattr__(self, name): 275 if self._wrapped is None: --&gt; 276 self._setup() 277 return getattr(self._wrapped, name) 278 C:\Users\Michael\Dropbox\development\projects\django-socialdealing\socialdealing\apps\etl\utils\filehelper.py in _setup(self) 58 59 def _setup(self): ---&gt; 60 self._wrapped = RemoteFile(self.url) 61 62 c:\Users\Michael\Dropbox\development\tools\Portable Python 2.7.2.1-django1.3.1\App\lib\site-packages\django\utils\functional.pyc in __getattr__(self, name) 274 def __getattr__(self, name): 275 if self._wrapped is None: --&gt; 276 self._setup() 277 return getattr(self._wrapped, name) 278 </code></pre>
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    1. PO
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    1. USDavid Robinson
    1. USMichael
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    1. COCould you paste in part of the traceback so we can see what function was infinitely recursed?
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      1. PORuntimeError: maximum recursion depth exceeded : why?
      1. USDavid Robinson
    2. COSure, I add it.
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      1. PORuntimeError: maximum recursion depth exceeded : why?
      1. USMichael
 

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