My `rsync` wrapper, filtering output and filling exclude list for NTFS drives.

rsync.py

#!/usr/bin/env python3
import subprocess as subp
import sys
import os


exclude_list = [
    'System Volume Information',
    '$RECYCLE.BIN',
]
realargs = sum((['--exclude', it] for it in exclude_list), [])
realargs = ['rsync'] + realargs + sys.argv[1:]


def grab_output(args):
    p = subp.Popen(args, stdout=subp.PIPE, encoding='utf-8')
    yield from p.stdout


def is_dry_run(args):
    return '-n' in args or '--dry-run' in args


class DeleteFileBase:
    def add_item(self, ln):
        print(ln)

    def dump_and_clear(self):
        pass


class DeleteFilesSet(DeleteFileBase):
    def __init__(self):
        super().__init__()
        self.lines = set()

    def add_item(self, ln):
        if ln.endswith('/'):
            self.lines = {
                it for it in self.lines
                if not it.startswith(ln)
            }
        self.lines.add(ln)

    def dump_and_clear(self):
        if self.lines:
            for item in self.lines:
                print(item)
            self.lines.clear()


def main():
    deletefiles = DeleteFilesSet() \
        if is_dry_run(realargs) else DeleteFileBase()
    for ln in grab_output(realargs):
        ln = ln.rstrip()
        if ln.startswith('deleting '):
            deletefiles.add_item(ln)
        else:
            deletefiles.dump_and_clear()
            if not ln.endswith('/'):
                print(ln)


if __name__ == '__main__':
    main()