yum or dnf command fails with an error "ImportError: cannot import name 'encoding'"

Issue

• yum or dnf command fails with the following traceback error on RHEL 8 :

  # yum update
  
  Traceback (most recent call last):
   File "/usr/lib/python3.6/site-packages/dnf/crypto.py", line 35, in <module>
     from gpg import Context
   File "/usr/lib64/python3.6/site-packages/gpg/__init__.py", line 123, in <module>
     from . import core
   File "/usr/lib64/python3.6/site-packages/gpg/core.py", line 12, in <module>
     from . import constants
   File "/usr/lib64/python3.6/site-packages/gpg/constants/__init__.py", line 28, in <module>
     from . import data, keylist, sig, tofu  # The subdirs.
   File "/usr/lib64/python3.6/site-packages/gpg/constants/data/__init__.py", line 3, in <module>
     from . import encoding
  ImportError: cannot import name 'encoding'
  
  During handling of the above exception, another exception occurred:
  
  Traceback (most recent call last):
   File "/usr/bin/yum", line 61, in <module>
     from dnf.cli import main
   File "/usr/lib/python3.6/site-packages/dnf/__init__.py", line 30, in <module>
     import dnf.base
   File "/usr/lib/python3.6/site-packages/dnf/base.py", line 35, in <module>
     from dnf.db.history import SwdbInterface
   File "/usr/lib/python3.6/site-packages/dnf/db/history.py", line 28, in <module>
     from dnf.yum import misc
   File "/usr/lib/python3.6/site-packages/dnf/yum/misc.py", line 29, in <module>
     import dnf.crypto
   File "/usr/lib/python3.6/site-packages/dnf/crypto.py", line 38, in <module>
     import gpgme
  ModuleNotFoundError: No module named 'gpgme'
  

• yum or dnf command fails with the following traceback error on RHEL 9 :

  # dnf repolist
  
  Traceback (most recent call last):
   File "/usr/lib/python3.9/site-packages/dnf/crypto.py", line 35, in <module>
     from gpg import Context
  File "/usr/lib64/python3.9/site-packages/gpg/__init__.py", line 123, in <module>
     from . import core
   File "/usr/lib64/python3.9/site-packages/gpg/core.py", line 12, in <module>
     from . import constants
   File "/usr/lib64/python3.9/site-packages/gpg/constants/__init__.py", line 28, in <module>
     from . import data, keylist, sig, tofu  # The subdirs.
   File "/usr/lib64/python3.9/site-packages/gpg/constants/data/__init__.py", line 3, in <module>
     from . import encoding
  ImportError: cannot import name 'encoding' from partially initialized module 'gpg.constants.data' (most likely due to a circular import) (/usr/lib64/python3.9/site-packages/gpg/constants/data/__init__.py)
  
  During handling of the above exception, another exception occurred:
  
  Traceback (most recent call last):
   File "/usr/bin/dnf", line 61, in <module>
     from dnf.cli import main
   File "/usr/lib/python3.9/site-packages/dnf/__init__.py", line 30, in <module>
     import dnf.base
   File "/usr/lib/python3.9/site-packages/dnf/base.py", line 35, in <module>
     from dnf.db.history import SwdbInterface
   File "/usr/lib/python3.9/site-packages/dnf/db/history.py", line 28, in <module>
     from dnf.yum import misc
   File "/usr/lib/python3.9/site-packages/dnf/yum/misc.py", line 29, in <module>
     import dnf.crypto
   File "/usr/lib/python3.9/site-packages/dnf/crypto.py", line 38, in <module>
     import gpgme
  ModuleNotFoundError: No module named 'gpgme'