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  • Help on ImportError('Error: Reinit is forbidden')

    From Jason Qian@21:1/5 to All on Wed May 17 15:32:23 2023
    Hi,

    I Need some of your help.

    I have the following C code to import *Import python.* It works 99% of
    the time, but sometimes receives "*ImportError('Error: Reinit is forbidden')*". error.
    **We run multiple instances of the app parallelly.

    *** Python version(3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:59:51) [MSC
    v.1914 64 bit (AMD64)]

    PyObject * importPythonModule(const char* pmodName)
    {
    const char* errors = NULL;
    int nlen = strlen(pmodName);
    PyObject *pName = PyUnicode_DecodeUTF8(pmodName, nlen, errors);
    PyObject *pModule = *PyImport_Import*(pName);
    Py_DECREF(pName);
    if (pModule == NULL) {
    if (*PyErr_Occurred*()) {
    handleError("PyImport_Import()");
    }
    }
    }
    void handleError(const char* msg)
    {
    ...
    "PyImport_Import() - ImportError('Error: Reinit is forbidden')"
    }


    Thanks
    Jason

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  • From Barry@21:1/5 to All on Thu May 18 08:53:44 2023
    On 17 May 2023, at 20:35, Jason Qian via Python-list <python-list@python.org> wrote:

     Hi,

    I Need some of your help.

    I have the following C code to import *Import python.* It works 99% of
    the time, but sometimes receives "*ImportError('Error: Reinit is forbidden')*". error.
    **We run multiple instances of the app parallelly.

    *** Python version(3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:59:51) [MSC v.1914 64 bit (AMD64)]

    PyObject * importPythonModule(const char* pmodName)
    {
    const char* errors = NULL;
    int nlen = strlen(pmodName);
    PyObject *pName = PyUnicode_DecodeUTF8(pmodName, nlen, errors);
    PyObject *pModule = *PyImport_Import*(pName);
    Py_DECREF(pName);
    if (pModule == NULL) {
    if (*PyErr_Occurred*()) {
    handleError("PyImport_Import()");
    }
    }
    }
    void handleError(const char* msg)
    {
    ...
    "PyImport_Import() - ImportError('Error: Reinit is forbidden')"
    }

    You do not seem to printing out msg, you have assumed it means reinit it seems. What does msg contain when it fails?

    Barry


    Thanks
    Jason
    --
    https://mail.python.org/mailman/listinfo/python-list


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  • From Jason Qian@21:1/5 to barry@barrys-emacs.org on Thu May 18 08:55:53 2023
    Hi Barry,

    void handleError(const char* msg)
    {
    ...
    PyErr_Fetch(&pyExcType, &pyExcValue, &pyExcTraceback); PyErr_NormalizeException(&pyExcType, &pyExcValue, &pyExcTraceback);

    PyObject* str_value = PyObject_Repr(pyExcValue);
    PyObject* pyExcValueStr = PyUnicode_AsEncodedString(str_value, "utf-8",
    "Error ~");
    const char **strErrValue* = PyBytes_AS_STRING(pyExcValueStr);

    //where *strErrValue* = "ImportError('Error: Reinit is forbidden')"
    ...
    }

    What we imported is a Python file which import some pyd libraries.


    Thanks
    Jason


    On Thu, May 18, 2023 at 3:53 AM Barry <barry@barrys-emacs.org> wrote:



    On 17 May 2023, at 20:35, Jason Qian via Python-list <
    python-list@python.org> wrote:

     Hi,

    I Need some of your help.

    I have the following C code to import *Import python.* It works 99% of the time, but sometimes receives "*ImportError('Error: Reinit is forbidden')*". error.
    **We run multiple instances of the app parallelly.

    *** Python version(3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:59:51) [MSC v.1914 64 bit (AMD64)]

    PyObject * importPythonModule(const char* pmodName)
    {
    const char* errors = NULL;
    int nlen = strlen(pmodName);
    PyObject *pName = PyUnicode_DecodeUTF8(pmodName, nlen, errors);
    PyObject *pModule = *PyImport_Import*(pName);
    Py_DECREF(pName);
    if (pModule == NULL) {
    if (*PyErr_Occurred*()) {
    handleError("PyImport_Import()");
    }
    }
    }
    void handleError(const char* msg)
    {
    ...
    "PyImport_Import() - ImportError('Error: Reinit is forbidden')"
    }

    You do not seem to printing out msg, you have assumed it means reinit it seems.
    What does msg contain when it fails?

    Barry


    Thanks
    Jason
    --
    https://mail.python.org/mailman/listinfo/python-list




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  • From Barry@21:1/5 to All on Thu May 18 15:17:49 2023
    On 18 May 2023, at 13:56, Jason Qian <jqian@tibco.com> wrote:

    
    Hi Barry,
    void handleError(const char* msg)
    {
    ...
    PyErr_Fetch(&pyExcType, &pyExcValue, &pyExcTraceback);
    PyErr_NormalizeException(&pyExcType, &pyExcValue, &pyExcTraceback);

    PyObject* str_value = PyObject_Repr(pyExcValue);
    PyObject* pyExcValueStr = PyUnicode_AsEncodedString(str_value, "utf-8",
    "Error ~");
    const char *strErrValue = PyBytes_AS_STRING(pyExcValueStr);
    //where   strErrValue   = "ImportError('Error: Reinit is forbidden')"
    ...
    }
    What we imported is a Python file which import some pyd libraries.

    Please do not top post replies.
    Ok so assume the error is correct and hunt for the code that does the
    reimport.
    You may need to set break points in you C code to find tnw caller.
    Barry

    Thanks 
    Jason 
    On Thu, May 18, 2023 at 3:53 AM Barry <[1]barry@barrys-emacs.org> wrote:

    > On 17 May 2023, at 20:35, Jason Qian via Python-list
    <[2]python-list@python.org> wrote:
    >
    >  Hi,
    >
    >   I Need some of your help.
    >
    > I have the following C code to import *Import python.*   It works
    99% of
    > the time, but sometimes  receives  "*ImportError('Error: Reinit is
    > forbidden')*". error.
    > **We run multiple instances of the app parallelly.
    >
    > *** Python version(3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:59:51)
    [MSC
    > v.1914 64 bit (AMD64)]
    >
    > PyObject * importPythonModule(const char* pmodName)
    > {
    >    const char* errors = NULL;
    >     int nlen = strlen(pmodName);
    >     PyObject *pName = PyUnicode_DecodeUTF8(pmodName, nlen, errors);
    >     PyObject *pModule = *PyImport_Import*(pName);
    >     Py_DECREF(pName);
    >     if (pModule == NULL) {
    >     if (*PyErr_Occurred*()) {
    >            handleError("PyImport_Import()");
    >      }
    >   }
    > }
    > void handleError(const char* msg)
    > {
    >  ...
    >  "PyImport_Import() - ImportError('Error: Reinit is forbidden')"
    > }

    You do not seem to printing out msg, you have assumed it means reinit
    it seems.
    What does msg contain when it fails?

    Barry
    >
    >
    > Thanks
    > Jason
    > --
    > [3]https://mail.python.org/mailman/listinfo/python-list
    >

    References

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