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print help when no command supplied to commands.py
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emilykl committed Oct 1, 2025
commit 094e7703cc0fb15ef237258da75a85bbe85bf9f7
15 changes: 12 additions & 3 deletions commands.py
Original file line number Diff line number Diff line change
Expand Up @@ -296,8 +296,8 @@ def update_plotlyjs_dev(args, outdir):
perform_codegen(outdir)


def parse_args():
"""Parse command-line arguments."""
def make_parser():
"""Make argument parser."""

parser = argparse.ArgumentParser()
subparsers = parser.add_subparsers(dest="cmd", help="Available subcommands")
Expand All @@ -322,6 +322,10 @@ def parse_args():

subparsers.add_parser("updateplotlyjs", help="update plotly.js")

return parser

def parse_args(parser: argparse.ArgumentParser):
"""Parse command line arguments."""
return parser.parse_args()


Expand All @@ -331,7 +335,8 @@ def main():
project_root = os.path.dirname(os.path.realpath(__file__))
outdir = os.path.join(project_root, "plotly")

args = parse_args()
parser = make_parser()
args = parse_args(parser)

if args.cmd == "codegen":
perform_codegen(outdir, noformat=args.noformat)
Expand All @@ -349,6 +354,10 @@ def main():
version = plotly_js_version()
print(version)
update_plotlyjs(version, outdir)

elif args.cmd is None:
parser.print_help()
sys.exit(1)

else:
print(f"unknown command {args.cmd}", file=sys.stderr)
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