I am using python as a backend code for some scientific programs in the android app. For that, I am using the Chaquopy plugin. I found an error "No such file or directory" when accessing the text file which is stored at "app/src/main/python/". I think this is a path issue.
In Chaquopy 6.3.0 and later, you can access data files using a path relative to __file__. For example, if the data file is in the same directory as the Python file:
from os.path import dirname, join
filename = join(dirname(__file__), "filename.txt")
If the data file and the Python files are in different directories, then change the relative path accordingly. For example, if the Python file is src/main/python/alpha/hello.py, and the data file is src/main/python/bravo/filename.txt, then replace filename.txt with ../bravo/filename.txt.