Import the given name as a module, then walk the stack to determine
whether the failure was the module not existing, or some code in the module
(for example a dependent import) failing. This can be helpful to determine
whether any actual application code was run. For example, to distiguish
administrative error (entering the wrong module name), from programmer
error (writing buggy code in a module that fails to import).
| Raises | Exception | if something bad happens. This can be any type of exception, since nobody
knows what loading some arbitrary code might do. |
| _NoModuleFound | if no module was found. |