Guido: I am aware that 'import tkinter.font' can create 0, 1, or 2 new modules and 0, 1, or 2 new name bindings, one in the *importing* module and one in the *imported* module. You are correct that point 2 in the doc only talks about the importing module, making my paraphrase not correct for dotted names.  For the latter, the doc says.

"If the module being imported is not a top level module, then the name of the top level package that contains the module is bound in the local namespace as a reference to the top level package. The imported module must be accessed using its full qualified name rather than directly."

To me, this implies that the top level and intermediate packages will be modified as needed so that the 'full qualified name' works.