我正在尝试与实时子进程非常相似的东西。通过stdout和PIPE打开Popen

但是，我也想将输入发送到正在运行的进程。

如果我使用一个单独的线程中启动一个进程

process = subprocess.Popen(cmd,stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

我可以使用终端发送输入。

我如何从其他来源发送输入，例如不在线程中的单独函数？

我无法使用Popen.communicate，因为我正在尝试与程序进行实时交互，因此运行中的进程将永远无法完成。

提前致谢。

这是我的完整代码，我希望单击“发送”按钮时将输入发送到子过程。

from Tkinter import *`
from ttk import *`
import subprocess
from threading import Thread

class Example(Frame):

    def __init__(self, parent):
       Frame.__init__(self, parent)

        self.parent = parent
        self.initUI()


    def initUI(self):

        self.parent.title("Test Client")
        self.style = Style()
        self.style.theme_use("default")
        self.pack(fill=BOTH, expand=1)

        #Label, doesnt change
        lbl = Label(self, text="Client:")
        lbl.grid(row=0, column=1, sticky=W )

        #when output from client is shown
        global display
        display = Text(self,width=50,height=20)
        display.grid(row=1, column=1, sticky=E+W+N+S)

        #where user input is taken
        global prompt
        prompt = Entry(self,width=50)
        prompt.grid(row=3, column=1, sticky=E+W+N+S)

        #Button that will send input to client
        send = Button(self,text="Send",command=self.send)
        send.grid(row=3, column=2, sticky=N)
        get = Button(self,text="Get",command=self.get)
        get.grid(row=2, column=2, sticky=S)

    def get(self):
        print foo

    def send(self):
        sent = prompt.get()


def MyThread():
     global sent
     sent = 2
     cmd = ['nc', '-l', '-p', '50000']

     process = subprocess.Popen(cmd,stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

    while True:
        out = process.stdout.read(1)
        if out == '' and process.poll() != None:
            break
        if out != '':
            display.insert(INSERT, out)
            sys.stdout.write(out)
            sys.stdout.flush()

def main():
    root = Tk()
    root.geometry("500x410+300+300")
    app = Example(root)

    thread = Thread(target = MyThread, args=())
    thread.start()

    root.mainloop()

if __name__ == '__main__':
    main()