This is pypyr’s default loader. It searches for pipelines on local disk based on the pipeline-name and loads the pipeline when it finds it.
The important thing to understand with this loader is how pypyr matches the pipeline name and the look-up order in which it traverses the filesystem to resolve a pipeline name.
The loader’s fully qualified name is
pypyr.loaders.file. You’re very unlikely
to have to specify this manually yourself, because if you don’t specify any
value for loader in the input args of the api pypyr will use this loader by default.