Module validate 

Lightweight validation helpers for common CLI patterns.

Functions

parse_in_range

Parse a typed value from --key, ensuring it falls in an optional inclusive range.

path_exists

Validate that a path exists (file or dir).

path_is_dir

Validate that a path is a directory.

path_is_file

Validate that a path is a file.

require

Ensure a key is present: --key (flag) or --key <val> / --key=<val>.