How to use _get_selector_obj method in Airtest

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...142 assert_value = False if self.assertion == 'assert_not_' else True143 if self.assertion:144 action = action_stack[-1]145 assert_result = self.obj == assert_value146 prev_selector_obj = self._get_selector_obj()147 # 必须预先判断所选对象是否存在,不存在的对象调用info属性时会抛出uiautomator.UiObjectNotFoundException148 # 因为即使是assert_not_checked时,也是可以获取对象info的149 if prev_selector_obj.obj.exists:150 uiobj = prev_selector_obj.obj.info151 else:152 uiobj = None153 assert_action = self.assertion + action154 genlog('assert', [assert_action, prev_selector_obj.selectors, assert_result] + list(args), uiobj)155 if not assert_result:156 try:157 raise AutomatorAssertionFail('assert failed of {}, require {}, got {}'.format(assert_action, assert_value, self.obj))158 except AutomatorAssertionFail:159 log_error('assert', traceback.format_exc(), assert_action, prev_selector_obj.selectors, assert_result, *args, **kwargs)160 raise161 return None162 # handle selector expr163 if args or kwargs:164 if all([k in SELECTOR_ARGS for k in kwargs]):165 # get this select action name166 if len(action_stack) >= 1:167 action = action_stack[-1]168 else:169 action = 'global'170 # relative selector171 prev_selector_obj = self._get_selector_obj()172 if prev_selector_obj:173 uiobj = try_getattr(prev_selector_obj.obj, 'info', prev_selector_obj.select_action, prev_selector_obj.selectors)174 genlog('select', [prev_selector_obj.select_action, prev_selector_obj.selectors], uiobj)175 calling = try_call(self.obj, action, *args, **kwargs)176 ret = self.__class__(calling, self)177 ret.selectors = (args, kwargs) if args else kwargs178 ret.select_action = action179 return ret180 # 其他操作的log记录181 action, params = None, None182 if args or kwargs:183 last_log = list(args) or kwargs.values()184 else:185 last_log = []186 if len(action_stack) >= 3 and action_stack[-3] in TERTIARY_ACTION:187 taction = TERTIARY_ACTION[action_stack[-3]]188 if action_stack[-2] in taction:189 saction = taction[action_stack[-2]]190 if action_stack[-1] in saction:191 action = action_stack[-3]192 params = action_stack[-2:] + last_log193 if len(action_stack) >= 2 and action_stack[-2] in SECONDARY_ACTIONS:194 secondary_action = SECONDARY_ACTIONS[action_stack[-2]]195 if action_stack[-1] in secondary_action:196 action = action_stack[-2]197 params = action_stack[-1:] + last_log198 if len(action_stack) >= 1 and action_stack[-1] in PRIMARY_ACTION:199 action = action_stack[-1]200 params = last_log201 if action:202 # select操作log记录203 selector_obj = self._get_selector_obj()204 uiobj = None205 if selector_obj:206 uiobj = try_getattr(selector_obj.obj, 'info', selector_obj.select_action, selector_obj.selectors)207 genlog('select', [selector_obj.select_action, selector_obj.selectors], uiobj)208 genlog(action, params, uiobj)209 if not calling:210 calling = try_call(self.obj, 'action', *args, **kwargs)211 return self.__class__(calling, self)212 def __len__(self):213 return len(self.obj)214 def __nonzero__(self):215 """ python 2 only, for python 3, please override __bool__216 """217 return bool(self.obj)218 def __getitem__(self, item):219 return self.__class__(self.obj[item], self)220 def __iter__(self):221 objs, length = self, len(self)222 class Iter(object):223 def __init__(self):224 self.index = -1225 def next(self):226 self.index += 1227 if self.index < length:228 return objs[self.index]229 else:230 raise StopIteration()231 __next__ = next232 return Iter()233 def _get_selector_obj(self):234 # 下面的is not None的判断方法有点特殊235 # 因为该类实现了bool隐式转换接口,如果不这样判断的话,在and表达式返回时,还会自动bool隐式转换一次236 # 导致条件判断非预期237 ret = None238 if self.selectors:239 ret = self240 elif (self.parent and self.parent.selectors) is not None:241 ret = self.parent242 elif (self.parent and self.parent.parent and self.parent.parent.selectors) is not None:243 ret = self.parent.parent244 elif (self.parent and self.parent.parent and self.parent.parent.parent and self.parent.parent.parent.selectors) is not None:245 ret = self.parent.parent.parent246 return ret247 def end(self):...

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