From my amateur point of view it is not solely category.py problem, but it occured when trying to move categories on cs.wiki (Category:Bohové zvířat -> Category:Zvířecí božstva), so I am filing it this way.
I am using pywikibot on windows, version.py gives
```
Pywikibot: [https] r-pywikibot-core.git (7a04e89, g5417, 2015/04/27, 23:23:37, n
/a)
Release version: 2.0b3
httplib2 version: 0.9
cacerts: core\externals\httplib2\python2\httplib2
\cacerts.txt
certificate test: not ok
Python: 2.7.8 (default, Jun 30 2014, 16:03:49) [MSC v.1500 32 bit (Intel)]
unicode test: ok
```
Traceback:
```
ERROR: Traceback (most recent call last):
File "core\pywikibot\data\api.py", line 1555, in
submit
body=body, headers=headers)
File "core\pywikibot\tools\__init__.py", line 949
, in wrapper
return obj(*__args, **__kw)
File "core\pywikibot\comms\http.py", line 269, in
request
r = fetch(baseuri, method, body, headers, **kwargs)
File "core\pywikibot\comms\http.py", line 371, in
fetch
error_handling_callback(request)
File "core\pywikibot\comms\http.py", line 287, in
error_handling_callback
raise request.data
SSLError: [Errno 185090050] _ssl.c:344: error:0B084002:x509 certificate routines
:X509_load_cert_crl_file:system lib
```