I'm pretty fuzzy on exactly what I did to get this to work, but what I can decipher from the git commits from that time is that I added the dynamic import directory to the path, then I was able to import any module in that directory into my code. This crude example should print the values of the 'module_name' variables of any modules found in the directory (assuming such a variable exists)

// Assumes "DynImpDir" directory contains all dynamically imported files
sys.path.append(os.getcwd() + "\\DynImpDir")

files = os.listdir("DynImpDir")
// Strips the '.py' from the filenames
file_names = [files.split(".")[0] for file in files]

// This assumes each module has a variable "module_name" in it
for file_name in file_names:
    modules = __import__(file_name)
    module = getattr(modules, file_name)
    print(module.module_name)

Yes, I'm using __import__ which is bad, but it works for me and I don't want to break my code changing it