Views don't return results

I'm creating this ticket on behalf of a user who is not able to login here.

He's able to create and load a view from the UI like so:

View name is „_design/statistics/_view/class_malware“

Map is:
function (doc, meta) {

if (doc.malware == null)

{ emit("buggy",1) }

else if (doc.malware == true)

{ emit("malware",1); }

else

{ emit("clean",1); }

}

Reduce ist:
_count

Via the URL (/<bucket>/_design/statistics/_view/class_malware?stale=update_after&connection_timeout=60000&limit=10&skip=0&group_level=1) I’ll get the correct result:

{"rows":[

{"key":"clean","value":1}

,

{"key":"malware","value":95}

]
}

Now, when he uses it from the python sdk like this:

print self.__CB.conn.query('/statistics', 'class_malware')
or
print self.__CB.conn.query('statistics', 'class_malware', group_level=1, reduce=True)

He always gets

View<Design=statistics, View=class_malware, Query=Query:'', Rows Fetched=0>

.. when reduce is disabled, also no rows fetched.

If its wrong usage, or incomplete information let me know and I'll work it through with him.Thanks!