Batuhan Taskaya <isidenti...@gmail.com> added the comment:

The initial aim of the dis.Positions was to provide an interface like AST 
nodes. So you could do

for instr in dis.Bytecode(source):
    print("located in: ", instr.positions.lineno)

instead of

for instr in dis.Bytecode(source):
    if instr.positions:
        lineno = instr.positions[0]
    else:
        lineno = None
    print("located in: ", lineno)

I think this is a bug that we are not currently using it, I'd say we should use 
it properly and go with option 2.

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue46422>
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