On 16-5-2015 18:24, bruceg113...@gmail.com wrote:
> Data is coming from a wxPython TextCtrl widget.

Hm, there should be a better source of the data before it ends up in the 
textctrl widget.

> The widget is displaying data received on a serial port for a user to analyze.

If this is read from a serial port, can't you process the data directly when it 
arrives?
This may give you the chance to simply operate on the line as soon as it 
arrives from
the port, before pasting it all in the textctrl



Irmen

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