# No args is an error
argparse: No option specs were provided
# Missing -- is an error
argparse: Missing -- separator
# Flags but no option specs is an error
argparse: No option specs were provided
# Invalid option specs
argparse: Invalid option spec 'h-' at char '-'
argparse: Invalid option spec '+help' at char 'h'
argparse: Invalid option spec 'h/help:' at char ':'
argparse: Invalid option spec 'h-help::' at char ':'
argparse: Invalid option spec 'h-help=x' at char 'x'
# --max-args and --min-args work
min-max: Expected at least 1 args, got only 0
min-max: Expected at most 3 args, got 4
min-max: Expected at most 1 args, got 2