can not import the module deepcopy
<p>i've ran into this wierd error since few days where most of the applications/frameworks/modules will refuse to run , because of of the unavailability of the module deepcopy i can't understand why is that so ? </p>

<pre><code>    Traceback (most recent call last):
  File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  File "/usr/lib/pymodules/python2.6/django/http/__init__.py", line 13, in &lt;module&gt;
    from django.utils.datastructures import MultiValueDict, ImmutableList
  File "/usr/lib/pymodules/python2.6/django/utils/datastructures.py", line 3, in &lt;module&gt;
    from django.utils.copycompat import deepcopy
ImportError: cannot import name deepcopy
</code></pre>

<p>why is that so ? and how it can be fixed ? </p>
