As an alternative solution, according to Python documentation, you can directly import a local source file using spec_from_file_location
function.
Let’s say pygments
folder is located in libs
folder as follows:
+---addons21
| +---your_addon_root
| | +---libs
| | | +---pygments
you can import it as follows:
import sys
import pathlib
import importlib.util
addon_root = pathlib.Path(__file__).resolve().parent
pygments_source = addon_root / 'libs' / 'pygments' / '__init__.py'
spec = importlib.util.spec_from_file_location('pygments', pygments_source)
module = importlib.util.module_from_spec(spec)
sys.modules['pygments'] = module
spec.loader.exec_module(module)
from pygments import highlight
from pygments.lexers import PythonLexer
from pygments.formatters import HtmlFormatter
code = 'print("Hello World")'
print(highlight(code, PythonLexer(), HtmlFormatter()))