2 个 python 脚本之间的通信，其中第一个脚本持续运行

Question

I have 2 python scripts. To make it simple

1st script:

It is a simple infinite while loop in which a variable 'x' is being increased by 1(This script is always running)

Now what I want a 2nd script, when I call this script it should give me the present value of x

I read about multiprocessing,pipe and queue but was not able to implement it

EDIT:

I tried the socket solution and I am getting errors

Client Side

import serial
import time
from multiprocessing import Process
import sys
import socket
s=socket.socket()
port=43470
s.connect(('127.0.0.1',port))
sertx = serial.Serial('COM4', 115200)

while 1:
    for i in range(4):
        msg = str(i+1)
        # print('sending: ',msg.encode())

        msgstat = 'A' + msg
        #print(msgstat)
        #print(type(msgstat))
        tx_t = time.time()

        sertx.write(msg.encode())
        tx_t=str(tx_t)
        s.send(tx_t.encode())
        s.close()
        time.sleep(0.001)

Error - File ".\tx.py", line 23, in s.send(tx_t.encode()) OSError: [WinError 10038] An operation was attempted on something that is not a socket PS C:\Users\ambuj\Documents\Python Scripts>

Server

import socket

s = socket.socket() 

port = 43470 # make this any random port

s.bind(('127.0.0.1', port))

s.listen(5) # put the socket into listen mode

while True:

    c, addr = s.accept()

    data = c.recv(1024).decode("utf-8") # This data is received from the client script
    print(data)

    c.close() 

Answer 1

You can surely achieve this thing using socket communication. Just create a server script like this which will listen to any incoming data to a specific port...

import socket

s = socket.socket() 

port = 43470 # make this any random port

s.bind(('127.0.0.1', port))

s.listen(5) # put the socket into listen mode

while True:

    c, addr = s.accept()

    data = c.recv(1024).decode("utf-8") # This data is received from the client script

    c.close() 

Now in your client script, you have to connect to the socket that is binded in that port. Make a client script like this...

import socket

s = socket.socket()          
port = 43470 # Use the same port number here as you did in the server script.
s.connect(('127.0.0.1', port)) 
s.send(b"This data will be received by the server!")
s.close()  

You can do the reverse as well. So the server will be able to send the data to the client script. Its a two-way communication.

Remeber: This is just a simple demonstraction to make things work. In actual case, modification is much needed.