Is this possible in python?

[py thon]

I need a visual (gui) based app that can take a series of data point
and plot them on a graph like a line chart.  Then I would like to
reshape the curve created above by moving the data points with the
mouse. (all using spline interpolation).  Then re-output the correct
data  to a textfile.   I would like to know what part of this can
python perform.


Thanks for your time