  ignore_outcome = true
  
  [testenv:py39-djangomain]
  ignore_outcome = true
 
</s> remove        {py36,py37,py38,py39}-django32,
       {py38,py39}-{django40,djangomain},
 </s> add        {py36,py37,py38,py39,py310}-django32,
       {py38,py39,py310}-{django40,djangomain}, </s> remove         'Programming Language :: Python :: 3.5',
 </s> add 
[testenv:py310-djangomain]
ignore_outcome = true
  ignore_outcome = true
  
  [testenv:py39-djangomain]
  ignore_outcome = true
[testenv:py310-djangomain]
ignore_outcome = true
keep keep keep add
 Add 3.10 to tox.ini and setup.py 
tox.ini