cardinal_pythonlib.sysops

Original code copyright (C) 2009-2022 Rudolf Cardinal (rudolf@pobox.com).

This file is part of cardinal_pythonlib.

Licensed 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

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.

Simple system operations.

cardinal_pythonlib.sysops.die(msg: str, log_level: int = 50, exit_code: int = 1) → NoReturn[source]

Prints a message and hard-exits the program.

Parameters:
  • msg – message
  • log_level – log level to use
  • exit_code – exit code (errorlevel)
cardinal_pythonlib.sysops.get_envvar_or_die(envvar: str, log_level: int = 50, exit_code: int = 1) → str[source]

Returns the value of an environment variable. If it is unset or blank, complains and hard-exits the program.

Parameters:
  • envvar – environment variable name
  • log_level – log level to use for failure
  • exit_code – exit code (errorlevel) for failure
Returns:

the value of the environment variable
Return type:

str