How can i fix tvm.relay because while compiling it shows module 'pytest' missing

Troubleshooting
#1

i was going through tutorial sample for tvm relay - relay_quick_start.py(https://tvm.apache.org/docs/_downloads/6a91d98d4242322072303282a1f2de9c/relay_quick_start.py)

sse@wn:~/Downloads$ python3 relay_quick_start.py

Traceback (most recent call last):

  File "relay_quick_start.py", line 43, in <module>
from tvm.relay import testing
  File "/home/s*******e/tvm/python/tvm/relay/testing/__init__.py", line 28, in <module>
from tvm.testing import enabled_targets
  File "/home/s*******e/tvm/python/tvm/testing.py", line 59, in <module>
import pytest
ModuleNotFoundError: No module named 'pytest'
#2

Just install pytest by running python3 -m pip install pytest