single_add.py

from dvc.repo import locked
from dvc.repo.scm_context import scm_context
from dvc.repo.add import create_stages


@locked
@scm_context
def single_add(repo, target):
    # does not support --recursive add
    stage, = create_stages(repo, [target])
    stage.save()
    stage.commit()
    stage.dump()


if __name__ == "__main__":
    # Usage: single_add.py <target>
    from dvc.repo import Repo

    import os
    import sys

    if len(sys.argv) != 2:
        print(f"Usage: {os.path.basename(__file__)} <target>")
        sys.exit(1)
    single_add(Repo(), sys.argv[1])