Python Forum

Hi All,

below script to download DSLAM configuration, getting "error a bytes-like object is required, not 'str' "
tried with encoding, still getting error

import os
import csv
import subprocess
import time
dslamUser = "admin"
dslamPass = "1234"
httpresponse = '200 OK'
with open('dslams.csv', 'r') as csvfile:
        x = csv.reader(csvfile, delimiter=',', quotechar='|')
        for row in x:
                dslam = list(row)
                dslamName = dslam[0].strip()
                dslamAddr = dslam[1].strip()
                print('Now Trying:{} IP:{}'.format(dslamName,dslamAddr))
                print ('Authenticating with DSLAM....')
                cmdargs = "--auth-no-challenge -t 5 --http-user=" + dslamUser + " --http-password=" + dslamPass + " http://" + dslamAddr + "/config-0_.dat -O /dev/null"
                data = ""
                while not ('200 OK') in data:
                      task = subprocess.Popen("wget " + cmdargs, shell=True, stdout=None, stderr=subprocess.PIPE)
                      time.sleep(3)
                      dummy, data = task.communicate()
                os.system("wget --auth-no-challenge -t 5 --http-user=" + dslamUser + " --http-password=" + dslamPass + " -O '" + dslamName + "_'`date +%Y%m%d%H%M`'.dat' http://" + dslamAddr + "/config-0_.dat")

Error:
Now Trying:24K_Glamore-1 IP:10.217.128.93
Authenticating with DSLAM....
Traceback (most recent call last):
  File "zyxelbackup.py", line 22, in <module>
    while not ('200 OK') in data:
TypeError: a bytes-like object is required, not 'str'

Want to capture HTTP response

HTTP request sent, awaiting response... 200 OK

Code is much easier to read if you use f-string (python 3.6 or newer required)

import os
import csv
import subprocess
import time


dslamUser = "admin"
dslamPass = "1234"
httpresponse = '200 OK'

with open('dslams.csv', 'r') as csvfile:
    x = csv.reader(csvfile, delimiter=',', quotechar='|')
    for row in x:
        dslam = list(row)
        dslamName = dslam[0].strip()
        dslamAddr = dslam[1].strip()
        print(f'Now Trying:{dslamName} IP:{dslamAddr}')
        print ('Authenticating with DSLAM....')
        cmdargs = f"--auth-no-challenge -t 5 --http-user={dslamUser} --http-password={dslamPass} "
            f"http://{dslamAddr}/config-0_.dat -O /dev/null"
        data = ""
        while not ('200 OK') in data:
            task = subprocess.Popen(f"wget {cmdargs}", shell=True, stdout=None, stderr=subprocess.PIPE)
            time.sleep(3)
            dummy, data = task.communicate()
        os.system(f"wget --auth-no-challenge -t 5 --http-user={dslamUser} --http-password={dslamPass} "
            f"-O '{dslamName}_'`date +%Y%m%d%H%M`'.dat' http://{dslamAddr}/config-0_.dat")

rather than using wget, better to use requests.