fix a bug in the script name running test for python 2.7 on Jenkins
fix a bug in the script name running test for python 2.7 on Jenkins

sdpython/ensae_teaching_cs,sdpython/ensae_teaching_cs,sdpython/ensae_teaching_cs,sdpython/ensae_teaching_cs,sdpython/ensae_teaching_cs,sdpython/ensae_teaching_cs