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How to use currently_capped method in hypothesis

Best Python code snippet using hypothesis

recursive.py

Source:recursive.py

1# coding=utf-82#3# This file is part of Hypothesis, which may be found at4# https://github.com/HypothesisWorks/hypothesis-python5#6# Most of this work is copyright (C) 2013-2015 David R. MacIver7# (david@drmaciver.com), but it contains contributions by others. See8# CONTRIBUTING.rst for a full list of people who may hold copyright, and9# consult the git log if you need to determine who owns an individual10# contribution.11#12# This Source Code Form is subject to the terms of the Mozilla Public License,13# v. 2.0. If a copy of the MPL was not distributed with this file, You can14# obtain one at http://mozilla.org/MPL/2.0/.15#16# END HEADER17from __future__ import division, print_function, absolute_import18from contextlib import contextmanager19from hypothesis.searchstrategy.wrappers import WrapperStrategy20from hypothesis.searchstrategy.strategies import OneOfStrategy, \21    SearchStrategy22class LimitReached(BaseException):23    pass24class LimitedStrategy(WrapperStrategy):25    def __init__(self, strategy):26        super(LimitedStrategy, self).__init__(strategy)27        self.marker = 028        self.currently_capped = False29    def do_draw(self, data):30        assert self.currently_capped31        if self.marker <= 0:32            raise LimitReached()33        self.marker -= 134        return super(LimitedStrategy, self).do_draw(data)35    @contextmanager36    def capped(self, max_templates):37        assert not self.currently_capped38        try:39            self.currently_capped = True40            self.marker = max_templates41            yield42        finally:43            self.currently_capped = False44class RecursiveStrategy(SearchStrategy):45    def __init__(self, base, extend, max_leaves):46        self.max_leaves = max_leaves47        self.base = LimitedStrategy(base)48        self.extend = extend49        strategies = [self.base, self.extend(self.base)]50        while 2 ** len(strategies) <= max_leaves:51            strategies.append(52                extend(OneOfStrategy(tuple(strategies), bias=0.8)))53        self.strategy = OneOfStrategy(strategies)54    def validate(self):55        self.base.validate()56        self.extend(self.base).validate()57    def do_draw(self, data):58        while True:59            try:60                with self.base.capped(self.max_leaves):61                    return data.draw(self.strategy)62            except LimitReached:...

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