env

Module

Implements basic routines for working with the OS.

You can import these APIs from the os package. For example:

from os import setenv

setenv

setenv(name: StringRef, value: StringRef, overwrite: Bool) -> Bool

Changes or adds an environment variable.

Constraints:

The function only works on macOS or Linux and returns False otherwise.

Args:

  • name (StringRef): The name of the environment variable.
  • value (StringRef): The value of the environment variable.
  • overwrite (Bool): If an environment variable with the given name already exists, its value is not changed unless overwrite is True.

Returns:

False if the name is empty or contains an = character. In any other case, True is returned.

getenv

getenv(name: StringRef, default: StringRef) -> StringRef

Returns the value of the given environment variable.

Constraints:

The function only works on macOS or Linux and returns an empty string otherwise.

Args:

  • name (StringRef): The name of the environment variable.
  • default (StringRef): The default value to return if the environment variable doesn’t exist.

Returns:

The value of the environment variable.

getenv(name: StringRef) -> StringRef

Returns the value of the given environment variable.

Args:

  • name (StringRef): The name of the environment variable.

Returns:

The value of the environment variable, or empty string if it doesn’t exist.