Source code for bokeh.command.bootstrap
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# Copyright (c) 2012 - 2022, Anaconda, Inc., and Bokeh Contributors.
# All rights reserved.
#
# The full license is in the file LICENSE.txt, distributed with this software.
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''' Provide a ``main`` function to run bokeh commands.
The following are equivalent:
* Running the ``bokeh`` command line script:
.. code-block:: sh
bokeh serve --show app.py
* Using ``python -m bokeh``:
.. code-block:: sh
python -m bokeh serve --show app.py
* Executing ``main`` programmatically:
.. code-block:: python
from bokeh.command.bootstrap import main
main(["bokeh", "serve", "--show", "app.py"])
'''
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# Boilerplate
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from __future__ import annotations
import logging # isort:skip
log = logging.getLogger(__name__)
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# Imports
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# Standard library imports
import argparse
import sys
from typing import Sequence
# Bokeh imports
from bokeh import __version__
from bokeh.settings import settings
from bokeh.util.strings import nice_join
# Bokeh imports
from . import subcommands
from .util import die
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# Globals and constants
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__all__ = (
'main',
)
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# General API
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[docs]def main(argv: Sequence[str]) -> None:
''' Execute the Bokeh command.
Args:
argv (seq[str]) : a list of command line arguments to process
Returns:
None
The first item in ``argv`` is typically "bokeh", and the second should
be the name of one of the available subcommands:
* :ref:`info <bokeh.command.subcommands.info>`
* :ref:`json <bokeh.command.subcommands.json>`
* :ref:`sampledata <bokeh.command.subcommands.sampledata>`
* :ref:`secret <bokeh.command.subcommands.secret>`
* :ref:`serve <bokeh.command.subcommands.serve>`
* :ref:`static <bokeh.command.subcommands.static>`
'''
if len(argv) == 1:
die("ERROR: Must specify subcommand, one of: %s" % nice_join([x.name for x in subcommands.all]))
parser = argparse.ArgumentParser(
prog=argv[0],
epilog="See '<command> --help' to read about a specific subcommand.")
parser.add_argument('-v', '--version', action='version', version=__version__)
subs = parser.add_subparsers(help="Sub-commands")
for cls in subcommands.all:
subparser = subs.add_parser(cls.name, help=cls.help)
subcommand = cls(parser=subparser)
subparser.set_defaults(invoke=subcommand.invoke)
args = parser.parse_args(argv[1:])
try:
ret = args.invoke(args)
except Exception as e:
if settings.dev:
raise
else:
die("ERROR: " + str(e))
if ret is False:
sys.exit(1)
elif ret is not True and isinstance(ret, int) and ret != 0:
sys.exit(ret)
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# Dev API
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# Private API
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# Code
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