fix in pycnn.pyx
fix in pycnn.pyx

cherryc/dynet,Abasyoni/dynet,Abasyoni/dynet,Peilun-Li/dynet,Peilun-Li/dynet,Peilun-Li/dynet,Abasyoni/dynet,dhgarrette/cnn,mitchellstern/dynet,dhgarrette/cnn,cherryc/dynet,mitchellstern/dynet,kamigaito/cnn,dhgarrette/cnn,kamigaito/cnn,cherryc/dynet