SWIG C/C++；python接口

我有以下C文件（ezrange.C）：

和SWIG接口文件（ezrange.i）：

和安装文件（setup.py）：

我汇编如下：

swig-pythonezrange.i

python3 setup.py build\u ext--就地

当我启动python3时，我得到：

>>> import ezrange
>>> ezrange.range(3, 5)
[array([ 0.,  1.,  2.]), array([ 0.,  2.,  4.,  6.,  8.])]
>>>

我缺少双返回值（3.14）。如何在python中获得该值

---

谢谢

我构建了您的代码，但得到了

[3.14，array（[0,1,2.]）、array（[0,2,4,6,8.]）]

作为输出。正如预期的那样…输出数组应该附加到正常的输出值上。您使用的是哪个版本的SWIG？我的系统上有一个相当旧的2.0.12。我构建了您的代码，但得到了

[3.14，数组（[0,1,2.]），数组（[0,2,4,6,8.]）]

作为输出。正如预期的那样…输出数组应该附加到正常的输出值。您使用的是哪个版本的SWIG？我的系统上有一个相当旧的2.0.12。

double range(double *v1, int n1, double *v2, int n2);

%module ezrange

%{
#define SWIG_FILE_WITH_INIT
#include "ezrange.h"
%}

%include "numpy.i"

%init %{
    import_array();
%}

%apply (double* ARGOUT_ARRAY1, int DIM1) {(double* v1, int n1), (double* v2, int n2)}

%include "ezrange.h"

#! /usr/bin/env python

# System imports
from distutils.core import *
from distutils      import sysconfig

# Third-party modules - we depend on numpy for everything
import numpy

# Obtain the numpy include directory.  This logic works across numpy versions.
try:
    numpy_include = numpy.get_include()
except AttributeError:
    numpy_include = numpy.get_numpy_include()

# ezrange extension module
_ezrange = Extension("_ezrange",
                   ["ezrange.i","ezrange.c"],
                   include_dirs = [numpy_include],
                   )

# ezrange setup
setup(  name        = "range function",
        description = "range takes an integer and returns an n element int array where each element is equal to its index",
        author      = "Egor Zindy",
        version     = "1.0",
        ext_modules = [_ezrange]
       )

>>> import ezrange
>>> ezrange.range(3, 5)
[array([ 0.,  1.,  2.]), array([ 0.,  2.,  4.,  6.,  8.])]
>>>