NL4Py 的弃用警告

如何解决NL4Py 的弃用警告

我正在使用 NL4Py，并且一些函数有弃用警告。我能够通过 NL4Py python 包启动 Nelogo、打开模型并运行模型。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)

解决方法

事实证明 nlpy0.5.0 效果更好，并且会遵循文档：https://arxiv.org/pdf/1808.03292.pdf。

我能够使用以下代码安装 nlpy0.5.0：

pip install install nl4py==0.5.0 

希望更新 nlpy0.7.0 的人会更新文档。