【发布时间】：2021-01-25 16:48:07
【问题描述】：
我正在使用 NL4Py，一些函数有弃用警告。我能够启动 Nelogo，打开一个模型，并通过 NL4Py python 包运行一个模型。但是，当我尝试设置参数值并得到 DeprecationWarning 时，建议的函数与之前使用的函数 setParamsRandom() 相同。并且 setParamsRandom() 不会更新 Netlogo 模型中的参数值。我希望能够在 Netlogo 中设置参数值。我不确定是否有更新的功能或我的兼容性有问题：
蟒蛇3.8， ipython 7.10.0， nl4py 0.7.0、jdk 15.0.2、Netlogo 6.0、MacOS Catalina 10.15.7
#start of code for nl4py
import nl4py
nl4py.initialize("/Applications/NetLogo 6.0/")
n = nl4py.netlogo_app()
n.open_model('/Users/tracykuper/Desktop/NetLogo 6.0/models/Sample Models/Earth Science/Fire.nlogo')
n.setParamsRandom()
<ipython-input-10-50e53e085382>:1: DeprecationWarning: Call to deprecated function setParamsRandom (Alias left for backward compatibility. Use setParamsRandom() since version 1.0.0.).
n.setParamsRandom()
---------------------------------------------------------------------------
Py4JJavaError Traceback (most recent call last)
<ipython-input-10-50e53e085382> in <module>
----> 1 n.setParamsRandom()
2 #n.getParamList()
~/opt/anaconda3/envs/netpy/lib/python3.8/site-packages/nl4py/NL4PyException.py in new_func1(*args, **kwargs)
57 )
58 warnings.simplefilter('default', DeprecationWarning)
---> 59 return func1(*args, **kwargs)
60
61 return new_func1
~/opt/anaconda3/envs/netpy/lib/python3.8/site-packages/nl4py/NetLogoGUI.py in setParamsRandom(self)
185 @deprecated('Alias left for backward compatibility. Use setParamsRandom() since version 1.0.0.')
186 def setParamsRandom(self):
--> 187 self.set_params_random()
188
189 @deprecated('Alias left for backward compatibility. Use getParamNames() since version 1.0.0.')
~/opt/anaconda3/envs/netpy/lib/python3.8/site-packages/nl4py/NetLogoGUI.py in set_params_random(self)
97
98 '''
---> 99 paramSpecs = self.app.getParamList(self.path).getParamSpecs()
100
101 ##Using some bsearch code here thanks to Forrest Stonedahl
~/opt/anaconda3/envs/netpy/lib/python3.8/site-packages/py4j/java_gateway.py in __call__(self, *args)
1302
1303 answer = self.gateway_client.send_command(command)
-> 1304 return_value = get_return_value(
1305 answer, self.gateway_client, self.target_id, self.name)
1306
~/opt/anaconda3/envs/netpy/lib/python3.8/site-packages/py4j/protocol.py in get_return_value(answer, gateway_client, target_id, name)
324 value = OUTPUT_CONVERTER[type](answer[2:], gateway_client)
325 if answer[1] == REFERENCE_TYPE:
--> 326 raise Py4JJavaError(
327 "An error occurred while calling {0}{1}{2}.\n".
328 format(target_id, ".", name), value)
Py4JJavaError: An error occurred while calling o0.getParamList.
: java.lang.NoSuchMethodError: 'org.nlogo.api.ValueConstraint org.nlogo.agent.Observer.constraint(int)'
at bsearch.nlogolink.Utils.getDefaultConstraintsText(Utils.java:68)
at nl4py.server.NetLogoAppController.getParamList(NetLogoAppController.java:169)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
at py4j.Gateway.invoke(Gateway.java:282)
at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
at py4j.commands.CallCommand.execute(CallCommand.java:79)
at py4j.GatewayConnection.run(GatewayConnection.java:238)
at java.base/java.lang.Thread.run(Thread.java:832)
【问题讨论】：
标签： python ipython warnings netlogo deprecated