bytes-like object is required, not 'str

[anna]

Hi All,

I am fetching all devices from SQL server, checking there reachability, if devices are not in specific IPNetwork, writing to file. again opening file to check model against each device.

netaddr package takes IP are str and easysnmp IP as bytes. required help to resolve error.

import threading
import MySQLdb
import subprocess
import sys
from netaddr import IPNetwork, IPAddress
from easysnmp import Session
dslamsip = open('dslamip.txt','w')
rechable_dslamsip = open('rechable_dslamsip.txt','w')
#dslams = []
#rechable_dslams = []
switches_network = ['10.104.75.0/24','10.17.100.0/24','10.16.100.0/24','10.14.100.0/24']
def dslam_rechability_check(ip):
                 ping_reply = subprocess.call(['ping', '-c', '2', '-w', '2', '-q', '-n', ip],stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
                 if ping_reply == 0:
                     rechable_dslamsip.write(ip)
                     rechable_dslamsip.write('\n')
###################
def dslam_model(ip):
    community ='public'
    #sysDescr OID
    oid ='SNMPv2-MIB::sysDescr.0'
    try:
           session = Session(hostname=ip, community=community, version=2)
           snmp_get = session.get(oid)
           result = snmp_get.value.encode('ascii')
           if 'IES1248-51' in result:
                 model = 'ZyXEL'
           elif 'ECI' in result:
                 model = 'ECI'
           elif 'VES1724-56' in result:
                 model = 'ZyXEL VDSL'
           else:
                 model = 'UT'
           print('{} {}'.format(ip, model))
    except Exception as excp:
                 print(ip,excp)
def db_connection():
    global dslams
    db = MySQLdb.connect("localhost","abc","xyz","xxxx" )
    # prepare a cursor object using cursor() method
    cursor = db.cursor()

    sql = "SELECT * FROM ttml_ttsl_host_details \
       WHERE access_group =  '%s'" % ('TTML')
    try:
       # Execute the SQL command
         cursor.execute(sql)
         # Fetch all the rows in a list of lists.
         results = cursor.fetchall()
         for row in results:
             ip_addr = row[6]
             dslamsip.write(ip_addr)
             dslamsip.write('\n')
    except:
         print("Error: unable to fecth data")
# disconnect from server
    db.close()
###
def rechability_create_threads():
    threads = []
    with open('dslamip.txt') as ipfile:
        for sr_no, line in enumerate(ipfile, start=1):
             host = line.strip()
             th = threading.Thread(target = dslam_rechability_check ,args = (host,))
             th.start()
             threads.append(th)
        for thr in threads:
             thr.join()
def dslam_model_threads():
        model_threads = []
        with open('rechable_dslamsip.txt') as rechable_ipfile:
             for sr_no, line in enumerate(rechable_ipfile, start=1):
                 host = line.strip()
                 #print(host)
                 model_th = threading.Thread(target = dslam_model ,args = (host,))
                 model_th.start()
                 model_threads.append(model_th)
             for model_thr in model_threads:
                 model_thr.join()

if __name__ == "__main__":
     db_connection()
     rechability_create_threads()
     dslam_model_threads()
     rechable_dslamsip.close()
     dslamsip.close()

Error:
10.111.3.254 a bytes-like object is required, not 'str'
10.211.128.53 a bytes-like object is required, not 'str'
10.111.3.172 a bytes-like object is required, not 'str'
10.112.1.171 a bytes-like object is required, not 'str'
10.112.3.76 a bytes-like object is required, not 'str'
10.112.3.56 a bytes-like object is required, not 'str'
10.111.1.113 a bytes-like object is required, not 'str'
10.11.2.17 a bytes-like object is required, not 'str'
10.112.1.130 a bytes-like object is required, not 'str'
10.111.1.162 a bytes-like object is required, not 'str'
10.111.3.174 a bytes-like object is required, not 'str'

[michalmonday]

Can't test it and it's just a guess but you could try using:

import io 
bytes_like_object_to_send = io.BytesIO(string_to_send)

Edit: nevermind, my bad, please ignore

[anna]

Hi All,


from easysnmp import snmp_get, snmp_set, snmp_walk

snmp_get from easysnmp resolved this issue.

def dslam_model(ip):
    oid ='SNMPv2-MIB::sysDescr.0'
    try:
        result = snmp_get(oid, hostname=ip, community='public', version=2)
        if result.value == 'ECI telecom HiFOCuS broadband access system':
            model = 'ECI'
        elif result.value == 'VES1724-56':
            model = 'ZyXEL_VDSL'
        elif result.value == 'IP DSLAM MASTER':
            model = 'UT'
        else:
            model = 'ZyXEL'
        print(ip,model)
    except Exception as excp:
        pass