| # |
| # Licensed to the Apache Software Foundation (ASF) under one or more |
| # contributor license agreements. See the NOTICE file distributed with |
| # this work for additional information regarding copyright ownership. |
| # The ASF licenses this file to You under the Apache License, Version 2.0 |
| # (the "License"); you may not use this file except in compliance with |
| # the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| from __future__ import absolute_import |
| |
| import argparse |
| import shlex |
| import subprocess as sp |
| |
| |
| def parse_example(argv=None): |
| """Parse the command line arguments and return it as a string function call. |
| |
| Examples: |
| python path/to/snippets.py function_name |
| python path/to/snippets.py function_name arg1 |
| python path/to/snippets.py function_name arg1 arg2 ... argN |
| """ |
| parser = argparse.ArgumentParser() |
| parser.add_argument('example', help='Name of the example to run.') |
| parser.add_argument('args', nargs=argparse.REMAINDER, |
| help='Arguments for example.') |
| args = parser.parse_args(argv) |
| |
| # Return the example as a string representing the Python function call. |
| example_args = ', '.join([repr(arg) for arg in args.args]) |
| return '{}({})'.format(args.example, example_args) |
| |
| |
| def run_shell_commands(commands, **kwargs): |
| """Runs a list of Notebook-like shell commands. |
| |
| Lines starting with `#` are ignored as comments. |
| Lines starting with `!` are run as commands. |
| Variables like `{variable}` are substituted with **kwargs. |
| """ |
| for cmd in commands: |
| cmd = cmd.strip().lstrip('!').format(**kwargs) |
| sp_cmd = shlex.split(cmd, comments=True, posix=True) |
| if sp_cmd: |
| sp.call(sp_cmd) |
| yield sp_cmd |