feat: More classed errors#55
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* Several new classed errors are now thrown, mirroring Python's `optparse` exception hierarchy:
+ `optparse_option_error` — invalid option definition in `make_option()` or `add_option()`.
- `optparse_option_conflict_error` — duplicate flag in `OptionParser()` or `add_option()`.
+ `optparse_parse_error` — existing base class for all parse-time errors from `parse_args()`.
- `optparse_bad_option_error` — unrecognized, misused, or argument-requiring option.
* `optparse_ambiguous_option_error` — ambiguous abbreviated long flag.
- `optparse_bad_positional_arguments_error` — wrong number of positional arguments supplied.
* Also refactor to use internal (mockable) `is_interactive()` and improve some tests and error wordings.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Several new classed errors are now thrown, mirroring Python's
optparseexception hierarchy:optparse_option_error— invalid option definition inmake_option()oradd_option().optparse_option_conflict_error— duplicate flag inOptionParser()oradd_option().optparse_parse_error— existing base class for all parse-time errors fromparse_args().optparse_bad_option_error— unrecognized, misused, or argument-requiring option.optparse_ambiguous_option_error— ambiguous abbreviated long flag.optparse_bad_positional_arguments_error— wrong number of positional arguments supplied.Also refactor to use internal (mockable)
is_interactive()and improve some tests and error wordings.