Given the following folder structure:
executioner/:
- executioner.py
- library/:
- __init__.py
- global_functions.py
- oakalleyit.py
If I wanted to access a function inside of either global_functions.py or oakalleyit.py, but I won't know the name of the function or module until runtime, how would I do it?
Something like:
from library import 'oakalleyit'
'oakalleyit'.'cleanup'()
Where the '' implies it came from a config file, CLI argument, etc.
You can use the getattr() function to access names dynamically; this includes module objects:
import library
getattr(library, 'oakalleyit')()
Demo with the hashlib module:
>>> import hashlib
>>> getattr(hashlib, 'md5')()
<md5 HASH object @ 0x1012a02b0>
>>> getattr(hashlib, 'sha1')()
<sha1 HASH object @ 0x1012a03f0>
If you need to dynamic module access, you'll need to use the importlib.import_module() function to import modules based on a string value:
from importlib import import_module
module = import_module('library.oakalleyit')
getattr(module, 'some_function_name')()
library's __init__.py auto-imports all its submodules.import_module that way. You'll need to do import_module('library.oakalleyit') or import_module('.oakalleyit', 'library').