Method get_params

src/click/core.py:1099–1122

(self, ctx: Context)

        return formatter.getvalue().rstrip("\n")

    def get_params(self, ctx: Context) -> list[Parameter]:
        params = self.params
        help_option = self.get_help_option(ctx)

        if help_option is not None:
            params = [*params, help_option]

        if __debug__:
            import warnings

            opts = [opt for param in params for opt in param.opts]
            opts_counter = Counter(opts)
            duplicate_opts = (opt for opt, count in opts_counter.items() if count > 1)

            for duplicate_opt in duplicate_opts:
                warnings.warn(
                    (
                        f"The parameter {duplicate_opt} is used more than once. "
                        "Remove its duplicate as parameters should be unique."
                    ),
                    stacklevel=3,
                )

        return params

    def format_usage(self, ctx: Context, formatter: HelpFormatter) -> None:
        """Writes the usage line into the formatter.