Why this WLST script does not work from ant a task

Question

Hi,
          The following is my lovely WLST script to disable managed server hostname verification in a cluster environment.
          It works perfect if I run it from the OS command line,
          java -cp $WL_HOME/server/lib/weblogic.jar sslSetting.py weblogic weblogic t3://localhost:7001
          But if I run it from ant task, it never works. Nothing happens, not even any messages. Any idea?
          ------ sslSetting.py -----------
          # Disable HostnameVerification on managed servers
          # This is a ONLINE script. The admin server must be running
          # @param $1 BEA_USER_NAME
          # @param $2 BEA_USER_PWD
          # @param $3 admin server URL
          if (len(sys.argv) != 4):
          print "usage: " + sys.argv[0] + " domain-home "
          sys.exit()
          beaUserName=sys.argv[1]
          beaUserPwd=sys.argv[2]
          adminServerUrl=sys.argv[3]
          def handleServer(server):
          SSLPath="/Servers/" + server.getName() + "/SSL/" + server.getName()
          print("handleServer(1): " + SSLPath)
          try:
          cd (SSLPath)
          print("handleServer(2): " + SSLPath)
          set("HostnameVerificationIgnored", "true")
          except Exception, inst:
          dumpStack()
          print ("FAILED handleServer(): " + SSLPath)
          else:
          print ("DONE handleServer(): " + SSLPath)
          #===============================================================================
          # Main
          #===============================================================================
          try:
          connect(beaUserName, beaUserPwd, adminServerUrl)
          edit()
          startEdit()
          adminServerName=cmo.getAdminServerName()
          for server in cmo.getServers():
          if adminServerName != server.getName():
          handleServer(server)
          save()
          activate()
          except Exception:
          dumpStack()
          else:
          print ("=== DONE ===")

Answer 1

OK, when I run the WLST script from command java, I only need the weblogic.jar in the classpath. But I'll need a couple other jar file for it to work inside an ant target, as showing below.
          <target name="run-wlst">
          <java classname="weblogic.WLST" fork="true">
          <classpath>
          <pathelement path="${props.JAVA_HOME}/lib/tools.jar"/>
          <pathelement path="${props.WL_HOME}/server/lib/weblogic_sp.jar"/>
          <pathelement path="${props.WL_HOME}/server/lib/weblogic.jar"/>
          <pathelement path="${props.WL_HOME}/server/lib/webservices.jar"/>
          </classpath>
          <sysproperty key="weblogic.Home" value="${props.WL_HOME}" />
          <arg line="sslSetting.py weblogic weblogic t3://localhost:7001"/>
          </java>
          </target>