10 print "<<< ref#(btrack)=", sys.getrefcount(btrack)
11 bstep= btrack.GetStep2()
12 print "<<< ref#(btrack, bstep)=",\
13 sys.getrefcount(btrack),\
14 sys.getrefcount(bstep)
16 print "<<< delete bstep"
17 print "<<< ref#(btrack)=", sys.getrefcount(btrack)
21 cstep= btrack.GetStep2()
23 print "<<< previous step is still remain?"
27 print "--- stderr ---"