Comparison to None should be 'cond is None:' (E711)
Comparisons to the singleton objects, like True, False, and None, should be done with identity, not equality. Use “is” or “is not”
Anti-pattern
if var != True:
print("var is not equal to True")
if var == None:
print("var is equal to None")
Best practice
if var is not True:
print("var is not True")
if var is None:
print("var is None")