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Merged
vstinner merged 5 commits into from
Dec 16, 2019
Merged

bpo-38348: Extend options of ast tool #16540

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fc68a96
bpo-38348: Extend options of ast tool
isidentical Oct 2, 2019
1871ac9
type-comments to no-type-comments
isidentical Oct 4, 2019
ece2cd2
rearrange news entry, docs
isidentical Dec 16, 2019
189f9e5
dont => don't
isidentical Dec 16, 2019
fb9ce64
indent => indentation level
isidentical Dec 16, 2019
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9 changes: 9 additions & 0 deletions Doc/library/ast.rst
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Expand Up @@ -368,10 +368,19 @@ The following options are accepted:
Specify what kind of code must be compiled, like the *mode* argument
in :func:`parse`.

.. cmdoption:: --no-type-comments

Don't parse type comments.

.. cmdoption:: -a, --include-attributes

Include attributes such as line numbers and column offsets.

.. cmdoption:: -i <indent>
--indent <indent>

Indentation of nodes in AST (number of spaces).

If :file:`infile` is specified its contents are parsed to AST and dumped
to stdout. Otherwise, the content is read from stdin.

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8 changes: 6 additions & 2 deletions Lib/ast.py
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Expand Up @@ -562,15 +562,19 @@ def main():
parser.add_argument('-m', '--mode', default='exec',
choices=('exec', 'single', 'eval', 'func_type'),
help='specify what kind of code must be parsed')
parser.add_argument('--no-type-comments', default=True, action='store_false',
help="don't add information about type comments")
parser.add_argument('-a', '--include-attributes', action='store_true',
help='include attributes such as line numbers and '
'column offsets')
parser.add_argument('-i', '--indent', type=int, default=3,
help='indentation of nodes (number of spaces)')
args = parser.parse_args()

with args.infile as infile:
source = infile.read()
tree = parse(source, args.infile.name, args.mode, type_comments=True)
print(dump(tree, include_attributes=args.include_attributes, indent=3))
tree = parse(source, args.infile.name, args.mode, type_comments=args.no_type_comments)
print(dump(tree, include_attributes=args.include_attributes, indent=args.indent))

if __name__ == '__main__':
main()
2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Library/2019-10-02-18-15-28.bpo-38348._-5eq2.rst
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@@ -0,0 +1,2 @@
Add ``-i`` and ``--indent`` (indentation level), and ``--no-type-comments``
(type comments) command line options to ast parsing tool.