[Bug]: everflow/test_everflow_testbed.py::TestEverflowV4EgressAclEgressMirror::test_everflow_dscp_with_policer test cases failing dude to "TypeError: string argument without an encoding" while sending packets

[kaushiksrivatsav]

Issue Description

when the traffic is being sent from the script there is a mismatch in type in the file "acstests/everflow_policer_test.py" when using the testutils.send_packet() function

changing this script from
testutils.send_packet(self, self.src_port, str(self.base_pkt), count=self.NUM_OF_TOTAL_PACKETS)
to this
testutils.send_packet(self, self.src_port, bytes(self.base_pkt), count=self.NUM_OF_TOTAL_PACKETS)

creates further more issues in the acstests/everflow_policer_test.py file.

Results you see

ERROR: everflow_policer_test.EverflowPolicerTest
E ----------------------------------------------------------------------
E Traceback (most recent call last):
E File "acstests/everflow_policer_test.py", line 324, in runTest
E count = self.checkOriginalFlow()
E File "acstests/everflow_policer_test.py", line 183, in checkOriginalFlow
E testutils.send_packet(self, self.src_port, str(self.base_pkt), count=self.NUM_OF_TOTAL_PACKETS)
E File "/root/env-python3/lib/python3.7/site-packages/ptf/testutils.py", line 3202, in send_packet
E pkt = bytes(pkt)
E TypeError: string argument without an encoding
E
E ----------------------------------------------------------------------

Results you expected to see

test case to send packets successfully

Is it platform specific

marvell

Relevant log output

Output of show version

show version

SONiC Software Version: SONiC.202411.0-dirty-20250127.162535
SONiC OS Version: 12
Distribution: Debian 12.9
Kernel: 6.1.0-22-2-arm64
Build commit: bed58c457
Build date: Mon Jan 27 16:52:07 UTC 2025
Built by: marvell@cpss-arm-vm04

Attach files (if any)

No response

[bingwang-ms]

Will take a look

[bingwang-ms]

@wsycqyz Is this a known Python3 issue?