os.path — Common pathname manipulations — Python 3.10.1 ...
docs.python.org › 3 › libraryJan 01, 2022 · os.path.ismount (path) ¶ Return True if pathname path is a mount point: a point in a file system where a different file system has been mounted.On POSIX, the function checks whether path’s parent, path /.., is on a different device than path, or whether path /.. and path point to the same i-node on the same device — this should detect mount points for all Unix and POSIX variants.