Import a module by a name stored in a variable? (importlib?)

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I want to import a module name stored in a variable. This StackOverflow post says it it is possible in standard Python. How would I do the same in uPython?

Here's an example:

device_routines/
... __init__.py
... command.py

$ cat command.py
print("Inside command.py")

>>> import importlib
>>> mymodule = 'device_routines.command'
>>> myimport = importlib.import_module(mymodule)
Inside command.py
>>>