def writeToChild(self, childFD, data):
        if childFD is not 0:
            self.write(data)
        #TODO: does the following make sense?
#        elif childFD == 2:
#            self.writeExtended(connection.EXTENDED_DATA_STDERR, data)
dataset/ETHPy150Open sporsh/carnifex/carnifex/ssh/process.py/SSHProcess.writeToChild/operator `==` -> `is not`