$ add_molecules a.rst b.xyz --n-molecules 2
add_molecules: error: unrecognized arguments: --n-molecules 2
The option was registered as the single string "-n, --n-molecules", so argparse knows one malformed long option; --help prints the flag it will not accept. -n 2 only worked through prefix matching.
The option was registered as the single string
"-n, --n-molecules", so argparse knows one malformed long option;--helpprints the flag it will not accept.-n 2only worked through prefix matching.