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gh-58032: Do not use argparse.FileType in module CLIs and scripts (GH-113649)

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Open and close files manually. It prevents from leaking files,
preliminary creation of output files, and accidental closing of stdin
and stdout.
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Serhiy Storchaka 2024-01-10 15:07:19 +02:00 • committed by GitHub
parent a8629816c6
commit b3d2427f22
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7 changed files with 56 additions and 41 deletions
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13
Lib/dis.py
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@ -1032,11 +1032,16 @@ def main():
help='show inline caches')
parser.add_argument('-O', '--show-offsets', action='store_true',
help='show instruction offsets')
parser.add_argument('infile', type=argparse.FileType('rb'), nargs='?', default='-')
parser.add_argument('infile', nargs='?', default='-')
args = parser.parse_args()
with args.infile as infile:
source = infile.read()
code = compile(source, args.infile.name, "exec")
if args.infile == '-':
name = '<stdin>'
source = sys.stdin.buffer.read()
else:
name = args.infile
with open(args.infile, 'rb') as infile:
source = infile.read()
code = compile(source, name, "exec")
dis(code, show_caches=args.show_caches, show_offsets=args.show_offsets)
if __name__ == "__main__":