Combined with DingTalk Robot to write a program to monitor the printer toner status using python

from import *
 import requests
 import json

 # Configuration information
 PRINTER_IP = '1.1.1.1' # Printer IP
 COMMUNITY_STRING = 'public' # SNMP group name
 DINGTALK_WEBHOOK = '/robot/send?test' # Replace with DingTalk Robot Webhook Address

 # Ricoh printer OID information
 TONER_OIDS = {
     'Black': '1.3.6.1.2.1.43.11.1.1.9.1.1',
     'Cyan': '1.3.6.1.2.1.43.11.1.1.9.1.2',
     'Magenta': '1.3.6.1.2.1.43.11.1.1.9.1.3',
     'Yellow': '1.3.6.1.2.1.43.11.1.1.9.1.4',
     'black_max': '1.3.6.1.2.1.43.11.1.1.8.1.1',
 }


 def get_snmp_value(oid):
     """Get SNMP value and handle exceptions"""
     try:
         error_indication, error_status, error_index, var_binds = next(
             getCmd(SnmpEngine(),
                    CommunityData(COMMUNITY_STRING),
                    UdpTransportTarget((PRINTER_IP, 161)),
                    ContextData(),
                    ObjectType(ObjectIdentity(oid)))
         )

         if error_indication:
             print(f"SNMP error: {error_indication}")
             return None
         elif error_status:
             print(f"SNMP error: {error_status.prettyPrint()}")
             return None
         return var_binds[0][1] if var_binds else None
     except Exception as e:
         print(f"SNMP query exception: {str(e)}")
         return None


 def send_dingtalk_message(message):
     """Send a message to DingTalk Robot""""
     headers = {'Content-Type': 'application/json'}
     payload = {
         "msgtype": "markdown",
         "markdown": {
             "title": "Printer toner status",
             "text": message
         }
     }

     try:
         response = (DINGTALK_WEBHOOK,
                                  data=(payload),
                                  headers=headers,
                                  timeout=5)
         response.raise_for_status()
         print("Status has been sent to DingTalk")
     except as e:
         print(f"DingTalk message sending failed: {str(e)}")


 def get_toner_status():
     """Get and format the toner status""""
     print("Getting printer status...")

     # Build message content
     status_report = [
         "### Ricoh IMC2000 Toner Status Report",
         f"**IP address**: {PRINTER_IP} \n", # newline character is used in DingTalk markdown format
         "|Color|Remaining|\n|-|-|"
     ]

     for color, oid in TONER_OIDS.items():
         if 'max' in color:
             continue # Skip the maximum capacity value

         value = get_snmp_value(oid)
         if value is not None:
             status_report.append(f"|{()}|{value}%|")
         else:
             status_report.append(f"|{()}|Fetch failed|")

     # Send DingTalk Notification
     send_dingtalk_message("\n".join(status_report))


 if __name__ == "__main__":
     get_toner_status()