t.p._reflectpy3 : module documentation

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).

Parameters	importName	The name of the module to import. (type: str)
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.

Helper function for safe_repr and safe_str.