in notebooks/common/util/notebook_utils.py [0:0]
def update( self, status ):
if self.previous_status != status:
if self.need_newline:
sys.stdout.write("\n")
sys.stdout.write( status + " ")
self.need_newline = True
self.previous_status = status
else:
sys.stdout.write(".")
self.need_newline = True
sys.stdout.flush()