Moje pytanie brzmi: po wywołaniu procesu proces potomny wykonuje pętlę, aby uzyskać dane ze standardowego wejścia. Chciałbym zapisać nowe dane za pomocą Echo.Process.pipes [0] .write (dane) lub Echo.Process.writeToChild (0, dane), ale oba nie działają. Czy ktoś wyjaśni, co się dzieje? Lub jak obejść ten problem?

To jest błąd, który otrzymałem:

--- <exception caught here> ---
  File "/usr/local/encap/python-2.6.4/lib/python2.6/site-packages/Twisted-9.0.0-py2.6-linux-x86_64.egg/twisted/internet/selectreactor.py", line 146, in _doReadOrWrite
    why = getattr(selectable, method)()
  File "/usr/local/encap/python-2.6.4/lib/python2.6/site-packages/Twisted-9.0.0-py2.6-linux-x86_64.egg/twisted/internet/tcp.py", line 460, in doRead
    return self.protocol.dataReceived(data)
  File "pp1.py", line 30, in dataReceived
    Echo.Process.pipes[0].write(data)
exceptions.KeyError: 0

Dziękuję Ci,

Q

from sys import executable
from os import environ
import os
from twisted.internet import reactor
from twisted.internet.protocol import Protocol
from twisted.internet.protocol import Factory
from twisted.internet import protocol
import sys

implementation = """\
import os
import time
import sys

print "in child", os.getpid()

while (True):
        a = raw_input("")
        if a: print a
"""


class Echo(Protocol):
    Process = None
    def dataReceived(self, data):
        if Echo.Process == None:
                pp = MyPP()
                Echo.Process = reactor.spawnProcess(pp, executable, [executable, "-c", implementation, data], env=environ, childFDs = {0:1, 1:1, 2:2})
        else:
                Echo.Process.pipes[0].write(data)
                #Echo.Process.writeToChild(0,data)
        self.transport.write(data)

class EchoFactory(Factory):
    def buildProtocol(self, addr):
        return Echo()

class MyPP(protocol.ProcessProtocol):
    def connectionMade(self):
        print "connectionMade!"
    def outReceived(self, data):
        print "out"
    def errReceived(self, data):
        print "error", data
    def processExited(self, reason):
        print "processExited"
    def processEnded(self, reason):
        print "processEnded"
        print "quitting"

reactor.listenTCP(8200, EchoFactory())
print 'in parent', os.getpid()
reactor.run()