How to clear/restart the Python environment within RStudio?

RStudio v1.4 added some great features for writing Python, in particular viewing objects in the environment pane. I wanted to know what's the best way to "clear" Python variables from the environment as well as restart the engine? The broomstick icon that one can normally click above the R environment is greyed out when using Python. Is it possible to do these things without restarting RStudio entirely?

Can you file this as a feature request at Issues · rstudio/rstudio · GitHub? It sounds like this may not yet be implemented.