keep variables separate
keep variables separate

from [`source_python()`](https://rstudio.github.io/reticulate/reference/source_python.html)

> The environment to assign Python objects into (for example, parent.frame() or globalenv()). Specify NULL to not assign Python objects.
wibeasley/RAnalysisSkeleton,wibeasley/RAnalysisSkeleton,wibeasley/RAnalysisSkeleton