QuantLib-SWIG-1.19 python'来自导入_QuantLib'失败

编程问答 2022-08-12

问题描述

我下载了适用于Windows 10的QuantLib-SWIG-1.19。

我能够构建和安装python版本。

但是尝试运行build_ext时，测试失败。

SET QL_DIR=C:\Users\admuser\Workspace\QuantLib-1.19
SET INCLUDE=C:\Users\admuser\ThirdParty\boost_1_74_0;%INCLUDE%                             
SET LIB=C:\Users\admuser\ThirdParty\boost_1_74_0;%LIB%
set PATH=%PATH%;C:\Users\admuser\ThirdParty\swigwin\swigwin-4.0.2

cd C:\Users\admuser\Workspace\QuantLib-SWIG-1.19\Python

称为以下命令

python setup.py build
python setup.py install
python setup.py test

python setup.py的build_ext测试失败

running test
running build
running build_py
running build_ext
Traceback (most recent call last):
  File "setup.py",line 237,in <module>
    setup(name             = "QuantLib",File "C:\Users\admuser\ThirdParty\WinPython\python-3.8.2.amd64\lib\site-packages\setuptools\__init__.py",line 144,in setup
    return distutils.core.setup(**attrs)
  File "C:\Users\admuser\ThirdParty\WinPython\python-3.8.2.amd64\lib\distutils\core.py",line 148,in setup
    dist.run_commands()
  File "C:\Users\admuser\ThirdParty\WinPython\python-3.8.2.amd64\lib\distutils\dist.py",line 966,in run_commands
    self.run_command(cmd)
  File "C:\Users\admuser\ThirdParty\WinPython\python-3.8.2.amd64\lib\distutils\dist.py",line 985,in run_command
    cmd_obj.run()
  File "setup.py",line 61,in run
    module = __import__('QuantLibTestSuite',globals(),locals(),[''])
  File "test\QuantLibTestSuite.py",line 22,in <module>
    from date import DateTest
  File "test\date.py",line 18,in <module>
    import QuantLib as ql
  File "build\lib.win-amd64-3.8\QuantLib\__init__.py",line 21,in <module>
    from .QuantLib import *
  File "build\lib.win-amd64-3.8\QuantLib\QuantLib.py",line 13,in <module>
    from . import _QuantLib
ImportError: DLL load failed while importing _QuantLib: The parameter is incorrect.

setup.py构建创建了一个包含临时目录和lib目录的文件夹：

    QuantLib-SWIG-1.19\Python\build\lib.win-amd64-3.8\QuantLib
    which contains
        __init__.py
        _QuantLib.cp38-win_amd64.pyd
        QuantLib.py

setup.py安装添加：

QuantLib-SWIG-1.19\Python\QuantLib.egg-info
QuantLib-SWIG-1.19\Python\build\lib.win-amd64-3.8\QuantLib\__pycache__
python-3.8.2.amd64\Lib\site-packages\QuantLib-1.19-py3.8-win-amd64.egg

python-3.8.2.amd64\Lib\site-packages\QuantLib-1.19-py3.8-win-amd64.egg\QuantLib 
which contains:
        __pycache__ folder
        __init__.py
        _QuantLib.cp38-win_amd64.pyd
        _QuantLib.py
        QuantLib.py

所以我尝试导入QuantLib：

我打开了一个管理命令提示符窗口，它可以正常工作：

C:\WINDOWS\system32>python
Python 3.8.2 (tags/v3.8.2:7b3ab59,Feb 25 2020,23:03:10) [MSC v.1916 64 bit (AMD64)] on win32
Type "help","copyright","credits" or "license" for more information.
>>> import QuantLib as ql
>>> QuantLib.__file__
'C:\\Users\\admuser\\ThirdParty\\WinPython\\python-3.8.2.amd64\\lib\\site-packages\\quantlib-1.19-py3.8-win-amd64.egg\\QuantLib\\__init__.py'
>>>

但是随后我将C：\ Users \ admuser \ Workspace \ QuantLib-SWIG-1.19 \ Python cd CD

（我需要在此安装cd才能运行python setup.py）

C:\Users\admuser\Workspace\QuantLib-SWIG-1.19\Python>python
Python 3.8.2 (tags/v3.8.2:7b3ab59,"credits" or "license" for more information.
>>>import QuantLib as ql
Traceback (most recent call last):
  File "<stdin>",line 1,in <module>
  File "C:\Users\admuser\Workspace\QuantLib-SWIG-1.19\Python\QuantLib\__init__.py",in <module>
    from .QuantLib import *
  File "C:\Users\admuser\Workspace\QuantLib-SWIG-1.19\Python\QuantLib\QuantLib.py",in <module>
    from . import _QuantLib
ImportError: cannot import name '_QuantLib' from partially initialized module 'QuantLib' (most likely due to a circular import) (C:\Users\admuser\Workspace\QuantLib-SWIG-1.19\Python\QuantLib\__init__.py)
>>>
´´´

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

小编邮箱:dio#foxmail.com (将#修改为@）

pythonpython-3.xquantlib