Sorry i dont have a working python2 installation so it is hard to debug... in the past this tool worked for me. maybe you could try to use the 2to3 tool to convert the project to python3 and fix the remaining bugs. Bjoern ________________________________ Von: msfu &lt;msfu666(a)gmail.com&gt; Gesendet: Donnerstag, 21. April 2022 16:50:14 An: Riemer, Björn Cc: openbsc(a)lists.osmocom.org Betreff: Re: error in osmo-sim-auth.py okay, i tried with python2 sudo python2 osmo-sim-auth.py -r 00000000000000000000000000000000 -a ec9320c2c2000000e1dd22c1ad3e2d3d but this is the output Traceback (most recent call last): File "osmo-sim-auth.py", line 137, in <module> handle_usim(options, rand_bin, autn_bin) File "osmo-sim-auth.py", line 32, in handle_usim u = USIM() File "/usr/src/osmo-sim-auth/card/USIM.py", line 53, in __init__ ISO7816.__init__(self, CLA=0x00) File "/usr/src/osmo-sim-auth/card/ICC.py", line 148, in __init__ cardtype = AnyCardType() File "/usr/local/lib/python2.7/dist-packages/smartcard/CardType.py", line 54, in __init__ super().__init__() TypeError: super() takes at least 1 argument (0 given) how can i solve this? On 4/21/22 09:35, Riemer, Björn wrote: Hi, The script seems to be python2 and you are running it with python3. Either the script has to be ported or yust try to use legacy python2. Björn Am 21.04.2022 14:13 schrieb msfu <msfu666@gmail.com><mailto:msfu666@gmail.com>: hello, i have this issue with osmo-sim-auth. if i do sudo python osmo-sim-auth.py -r 00000000000000000000000000000000 -a ec9320c2c2000000e1dd22c1ad3e2d3d the cli repeats: Traceback (most recent call last): File "osmo-sim-auth.py", line 27, in <module> from card.USIM import USIM File "/usr/src/osmo-sim-auth/card/USIM.py", line 56 print '[DBG] type definition: %s' % type(self) ^ SyntaxError: invalid syntax maybe it's missing a library for USIM or something else? can you help me get beyond this issue? Thank you