Bug with global and nonlocal in the existing parser

[akshanshbhatt]

I tried to generate the AST for this code -

❯ cat examples/expr2.py
global a, c

And to my surprise, the new parser was working fine, but the existing parser failed to generate the correct AST.

❯ python3 -m ast examples/expr2.py
Module(
   body=[
      Global(
         names=[
            'a',
            'c'])],
   type_ignores=[])

❯ lpy --show-ast --new-parser examples/expr2.py --tree  #NEW
└-Module
  |-body=↧
  | └-Global
  |   └-names=a c
  └-type_ignores=↧

❯ lpy --show-ast examples/expr2.py --tree  #OLD/EXISTING
└-Module
  |-body=↧
  | └-Global
  |   └-names=
  └-type_ignores=↧

Similar case with nonlocal.

[Thirumalai-Shaktivel]

Thanks for opening an issue. Yup, we need to debug this.