In the simplified version of Python grammar at https://docs.python.org/3.10/reference/grammar.html, most 'invalid_<rule>' from the complete grammar at https://github.com/python/cpython/blob/3.10/Grammar/python.gram have been removed, but 2 of them remain :
primary:
| invalid_primary # must be before 'primay genexp' because of invalid_genexp
dict:
| '{' invalid_double_starred_kvpairs '}'
I suppose that the simplified version is extracted from the complete grammar with a program, and this program doesn't detect the 'invalid_<rule>' that don't end the line, since these 2 occurrences correspond to the only such lines in the complete grammar
primary[expr_ty]:
| invalid_primary # must be before 'primay genexp' because of invalid_genexp
dict[expr_ty]:
| '{' invalid_double_starred_kvpairs '}'
Also note the typo in the comment : 'primay genexp' instead of 'primary genexp'
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