Add python3 support

tests/database/installdbtest.py

@@ -10,7 +10,7 @@
 # Please read the COPYING file.
 #
 
-import testcase
+from . import testcase
 import pisi
 
 class InstallDBTestCase(testcase.TestCase):
@@ -69,7 +69,7 @@ class InstallDBTestCase(testcase.TestCase):
         pisi.api.install(["ctorrent"])
         self.installdb = pisi.db.installdb.InstallDB()
         revdeps = self.installdb.get_rev_deps("openssl")
-        assert set(["ctorrent", "curl"]) == set(map(lambda x:x[0], revdeps))
+        assert set(["ctorrent", "curl"]) == set([x[0] for x in revdeps])
 
     def testAddRemovePackage(self):
         pisi.api.install(["ctorrent"])