问题描述
我对自己的实现有些困惑。我有一个要嵌入到C ++中的python脚本。
import urllib.request
import ssl
import suds.transport.http
from suds.client import Client
class UnverifiedHttpsTransport(suds.transport.http.HttpTransport):
def __init__(self,*args,**kwargs):
super(UnverifiedHttpsTransport,self).__init__(*args,**kwargs)
def u2handlers(self):
handlers = super(UnverifiedHttpsTransport,self).u2handlers()
context = ssl.create_default_context()
context.check_hostname = False
context.verify_mode = ssl.CERT_NONE
handlers.append(urllib.request.HTTPSHandler(context=context))
return handlers
url="https://xxxxxest.com/datamanagement.asmx?WSDL"
client = Client(url,transport=UnverifiedHttpsTransport())
def ReadDatatest():
result = client.service.ReadTestData()
return result
def ReadGridData():
result = client.service.ReadGridData()
return result
def main():
result=ReadGridData()
print(result)
if __name__ == "__main__":
main()
然后sample_main.cpp
有plugin lib
sample_plugin.cpp。
sample_plugin.cpp具有如下的python嵌入式代码。
Py_Initialize();
pName = PyUnicode_DecodeFSDefault("web_interface");
pModule = PyImport_Import(pName);
Py_DECREF(pName);
if (pModule != NULL) {
pFunc_readtest = PyObject_GetAttrString(pModule,"ReadDataTest");
if (pFunc_readtest && PyCallable_Check(pFunc_readtest)) {
pValue = PyObject_CallObject(pFunc_readtest,NULL);
if(pValue != NULL) {
printf("Result of call: %s\n",pValue);
Py_DECREF(pValue);
}
}
Py_XDECREF(pFunc_readtest);
Py_DECREF(pModule);
}else{
PyErr_Print();
printf("Can't call python \n");
}
Py_FinalizeEx();
当我运行sample_main.exe时,出现错误
Traceback (most recent call last):
File "/opt/nvidia/deepstream/deepstream-5.0/sources/apps/sample_apps/deepstream-test3/web_interface.py",line 2,in <module>
import ssl
File "/usr/lib/python3.6/ssl.py",line 101,in <module>
import _ssl # if we can't import it,let the error propagate
ImportError: /usr/lib/python3.6/lib-dynload/_ssl.cpython-36m-aarch64-linux-gnu.so: undefined symbol: PyExc_OSError
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/apport_python_hook.py",line 63,in apport_excepthook
from apport.fileutils import likely_packaged,get_recent_crashes
File "/usr/lib/python3/dist-packages/apport/__init__.py",line 5,in <module>
from apport.report import Report
File "/usr/lib/python3/dist-packages/apport/report.py",line 30,in <module>
import apport.fileutils
File "/usr/lib/python3/dist-packages/apport/fileutils.py",line 23,in <module>
from apport.packaging_impl import impl as packaging
File "/usr/lib/python3/dist-packages/apport/packaging_impl.py",line 24,in <module>
import apt
File "/usr/lib/python3/dist-packages/apt/__init__.py",in <module>
import apt_pkg
ImportError: /usr/lib/python3/dist-packages/apt_pkg.cpython-36m-aarch64-linux-gnu.so: undefined symbol: PyExc_ValueError
Original exception was:
Traceback (most recent call last):
File "/opt/nvidia/deepstream/deepstream-5.0/sources/apps/sample_apps/deepstream-test3/web_interface.py",let the error propagate
ImportError: /usr/lib/python3.6/lib-dynload/_ssl.cpython-36m-aarch64-linux-gnu.so: undefined symbol: PyExc_OSError
当我包含Py_Initialize()时,错误将被消除;在sample_main.cpp
内。
有人可以解释为什么需要包含Py_Initialize();吗?在sample_main.cpp
里面?
这是正确的方法吗?我需要在里面什么东西
sample_main.cpp
是因为内存泄漏或其他任何问题?
解决方法
在嵌入Python的应用程序中,必须先调用Py_Initialize()函数,然后再使用其他Python / C API函数