Method _metadata_from

PyInstaller/depend/analysis.py:835–885

Collect metadata whose requirements are implied by given function names. Args: package: The module name that must be imported in a source file to trigger the search. methods: Function names from **package** which take a distri

(self, package, methods=(), recursive_methods=())

        return out

    def _metadata_from(self, package, methods=(), recursive_methods=()) -> set:
        """
        Collect metadata whose requirements are implied by given function names.

        Args:
            package:
                The module name that must be imported in a source file to trigger the search.
            methods:
                Function names from **package** which take a distribution name as an argument and imply that metadata
                is required for that distribution.
            recursive_methods:
                Like **methods** but also implies that a distribution's dependencies' metadata must be collected too.
        Returns:
            Required metadata in hook data ``(source, dest)`` format as returned by
            :func:`PyInstaller.utils.hooks.copy_metadata()`.

        Scan all source code to be included for usage of particular *key* functions which imply that that code will
        require metadata for some distribution (which may not be its own) at runtime. In the case of a match,
        collect the required metadata.
        """
        from PyInstaller.utils.hooks import copy_metadata
        from PyInstaller.compat import importlib_metadata

        # Generate sets of possible function names to search for.
        need_metadata = set()
        need_recursive_metadata = set()
        for method in methods:
            need_metadata.update(bytecode.any_alias(package + "." + method))
        for method in recursive_methods:
            need_recursive_metadata.update(bytecode.any_alias(package + "." + method))

        out = set()

        for name, code in self.get_code_using(package).items():
            for calls in bytecode.recursive_function_calls(code).values():
                for function_name, args in calls:
                    # Only consider function calls taking one argument.
                    if len(args) != 1:
                        continue
                    package = args[0]
                    try:
                        if function_name in need_metadata:
                            out.update(copy_metadata(package))
                        elif function_name in need_recursive_metadata:
                            out.update(copy_metadata(package, recursive=True))

                    except importlib_metadata.PackageNotFoundError:
                        # Currently, we opt to silently skip over missing metadata.
                        continue

        return out

    def get_collected_packages(self) -> list:
        """