__main__.py 文件源码

def user(ctx):
    """Subcommand to manage users."""
    db = ctx.obj.db
    db_url = db.url

    # sqlite driver for sqlalchemy creates an empty file on commit as a side
    # effect. We don't want this creation to happen, so before attempting
    # the creation we stop short if we already find out that the file is
    # missing and cannot possibly be initialized.
    if is_sqlitedb_url(db_url) and not sqlitedb_present(db_url):
        raise click.UsageError("Could not find database at {}".format(db_url))