Have the tool output some partial stats

tools/measure_loc.py

@@ -117,10 +117,13 @@ def run(sampler, kind):
     sampler.start()
 
     # del sys.modules["__main__"] # do we need this?
+    try:
         if fn == '-m':
             runpy.run_module(module, run_name="__main__")
         else:
             runpy.run_path(fn, run_name="__main__")
+    except KeyboardInterrupt:
+        print "Interrupted!"
 
     times = sampler.stop()