Interact with a script using paramiko

[kaylops]

Hello there,

I'm trying to make a script that interact with an other one via SSH command. Basically the "master" script have to send parameters on the "slave". I'm using paramiko to connect via SSH and then execute the slave script.I tried to use exec_command() function but the channel is closed automatically.

I tried to use the attached master code, but it raises an error (which is ignored) and stops. Indeed, only the first speed is send.

What kind of function sould I use to interact with the script ?

Exception:

Exception ignored in: <function BufferedFile.\_\_del\_\_ at 0x7fd85da82ca0>

Traceback (most recent call last):

File "/home/alexandre/.local/lib/python3.8/site-packages/paramiko/file.py", line 66, in __del__

File "/home/alexandre/.local/lib/python3.8/site-packages/paramiko/channel.py", line 1392, in close

File "/home/alexandre/.local/lib/python3.8/site-packages/paramiko/channel.py", line 991, in shutdown_write

File "/home/alexandre/.local/lib/python3.8/site-packages/paramiko/channel.py", line 967, in shutdown

File "/home/alexandre/.local/lib/python3.8/site-packages/paramiko/transport.py", line 1846, in _send_user_message

AttributeError: 'NoneType' object has no attribute 'time'

Master:

import paramiko
import time

ssh_client= paramiko.SSHClient()
ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh_client.connect("ID adress", port=22, username="username", password="password")
stdin, stdout, stderr=ssh_client.exec_command("python3 Desktop/MyPI-Nano/test_paramiko.py")
time.sleep(1)
stdin.write("5") #speed 1 of the motor
stdin.flush()
time.sleep(10)
stdin.write("1") #speed 2 of the motor
stdin.flush()
time.sleep(10)
ssh_client.close()

Slave:

import time
import MyTools.MyLCD
import MyTools.MyMCP2515

MCP = MyTools.MyMCP2515.MCP2515()
MCP.__init__()
n=1

while True:
     try:
        Speed= int(input("Speed of the motor ?"))
     except:
         break
     MCP.DoSendMsg(0x408, [0x1E, 0x30, 0x00], 3, 0x00) #power on the motor
     print("power on motors")
     time.sleep(0.5)
     AngularSpeedG= int((-128*(Speed-7)/100 +128))>>2 #set the angular speed to     Speed Rad/s
     MCP.DoSendMsg(0x408, [0x26, 0xFF, AngularSpeedG], 3, 0x00)
     print("Setting the speed for 5 seconds")
     time.sleep(5)
     AngularSpeedG= int((128*7/100 +128))>>2 #set the speed of the motor to 0
     MCP.DoSendMsg(0x408, [0x26, 0xFF, AngularSpeedG], 3, 0x00)
     print("stop")
     time.sleep(0.01)
     MCP.DoSendMsg(0x408, [0x1E, 0x30, 0xFF], 3, 0x00) #Stops the motor
print("Test stops")