1.3 install error

hoffman@stone:~$ sudo apt-get install python-zc.lockfile
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  python-zope.modulealias python-zope.app.keyreference
  python-zope.app.traversing python-zope.app.skins python-zope.thread
Use 'apt-get autoremove' to remove them.
The following NEW packages will be installed:
  python-zc.lockfile
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
110 not fully installed or removed.
Need to get 0B/7,434B of archives.
After this operation, 123kB of additional disk space will be used.
(Reading database ... 398678 files and directories currently installed.)
Unpacking python-zc.lockfile (from .../python-zc.lockfile_1.0.0-2ubuntu1_all.deb) ...
dpkg: error processing /var/cache/apt/archives/python-zc.lockfile_1.0.0-2ubuntu1_all.deb (--unpack):
 trying to overwrite '/usr/share/pyshared/zc/__init__.py', which is also in package python-zc 0:1ubuntu3
Errors were encountered while processing:
 /var/cache/apt/archives/python-zc.lockfile_1.0.0-2ubuntu1_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)