卡拉模拟器中的XMLSchemaChildrenValidationError(Python 3.7)

Question

我一直在尝试将场景运行器与卡拉0.9.5中的开放场景文件一起使用(使用Python 3.7(：

python scenario_runner.py --openscenario openscenario_file.xosc

我不断得到以下错误：

Traceback (most recent call last):
File "scenario_runner.py", line 413, in <module>
SCENARIORUNNER.run(ARGUMENTS)
File "scenario_runner.py", line 224, in run
self.run_openscenario(args)
File "scenario_runner.py", line 311, in run_openscenario
config = OpenScenarioConfiguration(args.openscenario)
File "C:scenario_runner-0.9.5.1srunnertoolsopenscenario_parser.py", line 37, in __init__
self._validate_openscenario_configuration()
File "C:scenario_runner-0.9.5.1srunnertoolsopenscenario_parser.py", line 58, in _validate_openscenario_configuration
xsd.validate(self.xml_tree)
File "C:PythonPython37site-packagesxmlschemavalidatorsschema.py", line 1269, in validate
raise error
xmlschema.validators.exceptions.XMLSchemaChildrenValidationError: failed validating <Element 'Event' at 0x000002621BDF6458> with XsdGroup(model='sequence', occurs=[1, 1]):
Reason: Unexpected child with tag 'Conditions' at position 2. Tag 'StartConditions' expected.
Schema:
<xsd:complexType xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:sequence>
<xsd:element maxOccurs="unbounded" name="Action">
<xsd:complexType>
<xsd:choice>
<xsd:element name="Global" type="OSCGlobalAction" />
<xsd:element name="UserDefined" type="OSCUserDefinedAction" />
<xsd:element name="Private" type="OSCPrivateAction" />
</xsd:choice>
<xsd:attribute name="name" type="xsd:string" use="required" />
</xsd:complexType>
</xsd:element>
<xsd:element name="StartConditions">
<xsd:complexType>
<xsd:sequence>
<xsd:element maxOccurs="unbounded" name="ConditionGroup" type="OSCConditionGroup" />
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
...
...
</xsd:complexType>
Instance:
<Event name="MyLaneChangeLeftEvent" priority="overwrite">
<Action name="MyLaneChangeLeftAction">
<Private>
<Lateral>
<LaneChange>
<Dynamics shape="sinusoidal" time="5" />
<Target>
<Relative object="$owner" value="1" />
</Target>
</LaneChange>
</Lateral>
</Private>
</Action>
<Conditions>
<Start>
<ConditionGroup>
<Condition delay="0" edge="rising" name="MyStartCondition1">
<ByEntity>
<TriggeringEntities rule="any">
<Entity name="$owner" />
...
...
</Event>
Path: /OpenSCENARIO/Storyboard/Story/Act/Sequence/Maneuver/Event

我对python和carla很陌生。我查找了这类错误，但找不到任何有用的信息，有什么想法吗？据我所知，子"Conditions"似乎是一个无效的子元素，但我不确定为什么。

Answer 1

错误很明显

位置2处具有标记"Conditions"的意外子级。应为标记"StartConditions"。

验证器看到一个<Conditions>元素，其中应该有<StartConditions>。

你的模式说"在出现1..N次<Action>之后，必须有一个<StartConditions>">:

<xsd:complexType xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:sequence>
<xsd:element maxOccurs="unbounded" name="Action">
<xsd:complexType>
<xsd:choice>
<xsd:element name="Global" type="OSCGlobalAction" />
<xsd:element name="UserDefined" type="OSCUserDefinedAction" />
<xsd:element name="Private" type="OSCPrivateAction" />
</xsd:choice>
<xsd:attribute name="name" type="xsd:string" use="required" />
</xsd:complexType>
</xsd:element>
<xsd:element name="StartConditions">
<xsd:complexType>
<xsd:sequence>
<xsd:element maxOccurs="unbounded" name="ConditionGroup" type="OSCConditionGroup" />
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>

这就是XML的作用：

<Event name="MyLaneChangeLeftEvent" priority="overwrite">
<Action name="MyLaneChangeLeftAction">  <!-- position 1 -->
<!-- ... -->
</Action>
<Conditions>                            <!-- position 2 -->
<!-- ... -->
</Conditions>
</Event>

解决方案是更新XML以匹配架构，或者更新架构以匹配XML。