access serial port in python

[vipulagarwal.in at gmail.com]

hi
i hav written a code in python to send an SMS from a nokia 3310
connected to my PC...
i wanted to receive a msg on my PC. In order to do so, the PC must know
when it has to read data frm the serial port ...thus an interrupt must
be generated when the serial port receives data frm the phone .....HOW
CAN I DO THIS IN PYTHON ??
can anyone help me with this INTERRUPT HANDLING thing in PYTHON ???
thanks