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This repository was archived by the owner on Jul 24, 2023. It is now read-only.
Exception SystemError: '/builddir/build/BUILD/Python-2.7.5/Objects/classobject.c:521: bad argument to internal function' #117
Description
Hi, I have a problem and I need help !!!
When used python.PyInstance_New to instance my python script Class, if Class inherit other Class, then have bad error
Exception SystemError: '/builddir/build/BUILD/Python-2.7.5/Objects/classobject.c:521: bad argument to internal function'
my golang programmer
package main
import (
"fmt"
"github.com/sbinet/go-python"
"os"
)
var PyStr = python.PyString_FromString
func init() {
os.Setenv("PYTHONPATH", ".")
fmt.Println("PYTHONPATH:", os.Getenv("PYTHONPATH"))
err := python.Initialize()
if err != nil {
panic(err.Error())
}
}
func import_and_use_obj() {
// Import class from module
objsModule := python.PyImport_ImportModule("objs")
if objsModule == nil {
panic("Error importing module: objs")
}
fmt.Printf("[MODULE REF] repr(objsModule) = %s\n", python.PyString_AS_STRING(objsModule.Repr()))
obj := objsModule.GetAttrString("obj")
if obj == nil {
panic("[CLASS REF] Error importing object: obj")
}
fmt.Printf("[CLASS REF] repr(obj) = %s\n", python.PyString_AS_STRING(obj.Repr()))
// Instantiate obj
newObj := python.PyInstance_New(obj, python.PyTuple_New(0), nil)
if newObj == nil {
panic("[INSTANCE REF] Error instantiating object: obj")
}
fmt.Printf("[INSTANCE REF] repr(newObj) = %s\n", python.PyString_AS_STRING(newObj.Repr()))
}
func main() {
err := python.Initialize()
if err != nil {
panic(err.Error())
}
defer python.Finalize()
import_and_use_obj()
python.Finalize()
}my python script
#!/usr/bin/env python2
import pickle
import json
class MyObj(object):
def __init__(self):
self.name = "ABC"
class obj(MyObj):
def __init__(self): pass
def obj_method(self):
print("Python object method called!")
return 1
def obj_method_arg(self, arg1):
print("Python object method called, with argument: %s" % arg1)
return 1
def obj_method_args(self, arg1, arg2):
print("Python object method called with arguments: %s" % arg1, arg2)
return 1
def obj_method_kwargs(self, **kwargs):
print("Python object method called with arguments:" )
print(kwargs)
return 1Error
[root@localhost demo]# go run application/demo1/main.go
PYTHONPATH: .
[MODULE REF] repr(objsModule) = <module 'objs' from '/root/demo/objs.py'>
[CLASS REF] repr(obj) = <class 'objs.obj'>
Exception SystemError: '/builddir/build/BUILD/Python-2.7.5/Objects/classobject.c:521: bad argument to internal function' in <module 'threading' from '/usr/lib64/python2.7/threading.pyc'> ignored
panic: [INSTANCE REF] Error instantiating object: obj
goroutine 1 [running]:
main.import_and_use_obj()
/root/demo/application/demo1/main.go:37 +0x195
main.main()
/root/demo/application/demo1/main.go:48 +0x49
exit status 2