don't do it unless you do not need to worry about latency. for things you need to do a few times a second, python is ok. for things that need to be in a loop re

don't do it unless you do not need to worry about latency. for things you need to do a few times a second, python is ok. for things that need to be in a loop responding to market data, use java or .Net. For code that needs to be very high frequency with very little latency, use c or c++ with the addition of hardware accelerators like FPGA.