Function array_fromfile

numpy/core/src/multiarray/multiarraymodule.c:2380–2470

static PyObject *
array_fromfile(PyObject *NPY_UNUSED(ignored), PyObject *args, PyObject *keywds)
{
    PyObject *file = NULL, *ret = NULL;
    PyObject *err_type = NULL, *err_value = NULL, *err_traceback = NULL;
    char *sep = "";
    Py_ssize_t nin = -1;
    static char *kwlist[] = {"file", "dtype", "count", "sep", "offset", "like", NULL};
    PyObject *like = Py_None;
    PyArray_Descr *type = NULL;
    int own;
    npy_off_t orig_pos = 0, offset = 0;
    FILE *fp;

    if (!PyArg_ParseTupleAndKeywords(args, keywds,
                "O|O&" NPY_SSIZE_T_PYFMT "s" NPY_OFF_T_PYFMT "$O:fromfile", kwlist,
                &file, PyArray_DescrConverter, &type, &nin, &sep, &offset, &like)) {
        Py_XDECREF(type);
        return NULL;
    }

    if (like != Py_None) {
        PyObject *deferred = array_implement_c_array_function_creation(
                "fromfile", like, args, keywds, NULL, 0, NULL);
        if (deferred != Py_NotImplemented) {
            Py_XDECREF(type);
            return deferred;
        }
    }

    file = NpyPath_PathlikeToFspath(file);
    if (file == NULL) {
        Py_XDECREF(type);
        return NULL;
    }

    if (offset != 0 && strcmp(sep, "") != 0) {
        PyErr_SetString(PyExc_TypeError, "'offset' argument only permitted for binary files");
        Py_XDECREF(type);
        Py_DECREF(file);
        return NULL;
    }
    if (PyBytes_Check(file) || PyUnicode_Check(file)) {
        Py_SETREF(file, npy_PyFile_OpenFile(file, "rb"));
        if (file == NULL) {
            Py_XDECREF(type);
            return NULL;
        }
        own = 1;
    }
    else {
        own = 0;
    }
    fp = npy_PyFile_Dup2(file, "rb", &orig_pos);
    if (fp == NULL) {
        Py_DECREF(file);
        Py_XDECREF(type);
        return NULL;