我正在第一次尝试将 Python 代码移植到 Cython。我对 C 的经验非常有限。我正在尝试创建一个相对简单的类来存储多维数组。为了解决这个问题,我们将属性时间保留为长度为 1 的单个一维数组。目前,我收到错误:
cdef np.ndarray[np.int64_t, ndim=1] time = np.empty([1], dtype=np.int64)
^
------------------------------------------------------------
data.pyx:22:40: Cannot assign default value to fields in cdef classes, structs or unions
以下是最相关的文件。
data.pyx
import numpy as np
cimport numpy as np
cdef extern from "data_extern.h":
cppclass _Data "Data":
np.int64_t time64[1]
double x_coord, y_coord, z_coord
_Data(np.int64_t *time, double x, double y, double z)
cdef class Data:
cdef _Data *thisptr
cdef np.ndarray[np.int64_t, ndim=1] time = np.empty([1], dtype=np.int64)
def __cinit__(self, np.int64_t time[1], x, y, z):
self.thisptr = new _Data(&time[0], x, y, z)
def __dealloc__(self):
del self.thisptr
数据外部.h
#ifndef DATA_EXTERN_H
#define DATA_EXTERN_H
class Data {
public:
signed long long time64[1];
double x_coord, y_coord, z_coord;
Data();
Data(signed long long time[1], double x, double y, double z;
~Data();
};
#endif
数据外部.cpp
#include <iostream>
#include "data_extern.h"
Data::Data () {}
// Overloaded constructor
Data::Data (signed long long time[1], double x, double y, double z {
this->time64 = time[0];
this->x_coord = x;
this->y_coord = y;
this->z_coord = z;
}
// Destructor
Data::~Data () {}
我认识到我的代码可能存在多个问题,但如果有人能为错误消息提供解释,我们将不胜感激。