[pygtk] PyGTK problem

[nipun batra]

I need from this code that var1,var2,var3,var4 should be continuosly read
from file(or serial port) and there value be updated continuosly.Also i wish
to use these 4 variables for plotting in pygame/matplotlib/VPython .How can
i do that.Moreover for every read cycle there has to be a write cycle on to
a file(or serial port) and the user must be able to set this value via an
entry.have not been able to figure out all this.Moreover with my code i am
able to presently display updated information on a button click(where as i
wanna use button just to start things of)
have attached program and source file 1.txt
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