optional_packages

sbpy.utils.optional_packages(*packages, message=None)

Decorator that warns if the arguments are not valid packages.

Parameters:

*modulesstr

The names of packages to test.

messagestr

An additional note to show the user, e.g., a description of the fallback behavior.

Returns:

successbool

True if all optional packages are available.

Warning

OptionalPackageUnavailable

Examples

>>> from sbpy.utils import optional_packages
>>> optional_packages("unavailable_package")  
OptionalPackageUnavailable: Optional package `unavailable_package` is unavailable.