How to use _filter_for_filtered_draw method in hypothesis

Best Python code snippet using hypothesis

strategies.py

Source:strategies.py

...315        Unsatisfiable.316        This method is part of the public API.317        """318        return FilteredStrategy(conditions=(condition,), strategy=self)319    def _filter_for_filtered_draw(self, condition):320        # Hook for parent strategies that want to perform fallible filtering321        # on one of their internal strategies (e.g. UniqueListStrategy).322        # The returned object must have a `.do_filtered_draw(data)` method323        # that behaves like `do_draw`, but returns the sentinel object324        # `filter_not_satisfied` if the condition could not be satisfied.325        # This is separate from the main `filter` method so that strategies326        # can override `filter` without having to also guarantee a327        # `do_filtered_draw` method.328        return FilteredStrategy(conditions=(condition,), strategy=self)329    @property330    def branches(self) -> List["SearchStrategy[Ex]"]:331        return [self]332    def __or__(self, other: "SearchStrategy[T]") -> "SearchStrategy[Union[Ex, T]]":333        """Return a strategy which produces values by randomly drawing from one...

collections.py

Source:collections.py

...180        # approach because some strategies have special logic for generation under a181        # filter, and FilteredStrategy can consolidate multiple filters.182        def not_yet_in_unique_list(val):183            return all(key(val) not in seen for key, seen in zip(self.keys, seen_sets))184        filtered = self.element_strategy._filter_for_filtered_draw(185            not_yet_in_unique_list186        )187        while elements.more():188            value = filtered.do_filtered_draw(data)189            if value is filter_not_satisfied:190                elements.reject()191            else:192                for key, seen in zip(self.keys, seen_sets):193                    seen.add(key(value))194                if self.tuple_suffixes is not None:195                    value = (value,) + data.draw(self.tuple_suffixes)196                result.append(value)197        assert self.max_size >= len(result) >= self.min_size198        return result...

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