Param: Make your Python code clearer and more reliable by declaring Parameters
copied from cf-staging / paramconda install conda-forge::param
conda install conda-forge/label/cf201901::param
conda install conda-forge/label/cf202003::param
conda install conda-forge/label/gcc7::param
Param is a library providing Parameters: Python attributes extended to have features such as type and range checking, dynamically generated values, documentation strings, default values, etc., each of which is inherited from parent classes if not specified in a subclass.