Someone

In [1]: import svn

In [2]: import svn.core

In [3]: cc = svn.core.svn_cache_config_t()

In [4]: cc.cache_size = 0
---------------------------------------------------------------------------
SystemError                               Traceback (most recent call last)
SystemError: Objects/longobject.c:980: bad argument to internal function

In [5]: cc.cache_size = 0L

In [6]: