ipython notebook clear cell output in code

Question

In a iPython notebook  I have a while loop that listens to a Serial port and print the received data in real time   What I want to achieve to only show the latest received data  i e only one line showing the most recent data  no scrolling in the cell output area   What I need i think  is to clear the old cell output when I receives new data  and then prints the new data  I am wondering how can I clear old data programmatically

User · Accepted Answer

You can use IPython display clear output to clear the output of a cell   from IPython display import clear output  for i in range 10       clear output wait True      print  Hello World      At the end of this loop you will only see one Hello World    Without a code example it s not easy to give you working code  Probably buffering the latest n events is a good strategy  Whenever the buffer changes you can clear the cell s output and print the buffer again

User · Answer

You can use the IPython display clear output to clear the output as mentioned in cel s answer  I would add that for me the best solution was to use this combination of parameters to print without any  shakiness  of the notebook   from IPython display import clear output  for i in range 10       clear output wait True      print i  flush True

User · Answer

And in case you come here  like I did  looking to do the same thing for plots in a Julia notebook in Jupyter  using Plots  you can use       IJulia clear output true    so for a kind of animated plot of multiple runs      if nrun  1         display plot x y             first plot     else        IJulia clear output true     clear the window  as above        display plot  x y            plot  overlays the plot     end   Without the clear output call  all plots appear separately

[python] ipython notebook clear cell output in code

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