c++ - Python 3.6 pyrfc 导入错误

Question

我有 VM win7 x64、Python 3.6，我正在尝试安装 pyrfc SAP 连接器。
我已经安装了 NWR​​FC 库，将它设置在 PATH 变量中，使用 easy_install 安装了 egg pyrfc-1.9.5-py3.5，并安装了 Visual c++ redistributable 2015 (x64) 14。但导入总是失败:

Python 3.6.0 (v3.6.0:41df79263a11, Dec 23 2016, 08:06:12) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.

>>> import pyrfc
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\ADMIN\AppData\Local\Programs\Python\Python36\lib\site-packages\pyrfc-1.9.5-py3.5-win-amd64.egg\pyrfc\__init__.py", line 22, in <module>
    from pyrfc._pyrfc import get_nwrfclib_version, Connection, TypeDescription, FunctionDescription, Server
  File "C:\Users\ADMIN\AppData\Local\Programs\Python\Python36\lib\site-packages\pyrfc-1.9.5-py3.5-win-amd64.egg\pyrfc\_pyrfc.py", line 7, in <module>
    __bootstrap__()
  File "C:\Users\ADMIN\AppData\Local\Programs\Python\Python36\lib\site-packages\pyrfc-1.9.5-py3.5-win-amd64.egg\pyrfc\_pyrfc.py", line 6, in __bootstrap__
    imp.load_dynamic(__name__,__file__)
  File "C:\Users\ADMIN\AppData\Local\Programs\Python\Python36\lib\imp.py", line 342, in load_dynamic
    return _load(spec)
ImportError: DLL load failed: The specified module could not be found.

在同一台机器上，我也有 Python2.7 - 它使用相同的 NWRFC 库并且它没有问题。

    Python 2.7.12 (v2.7.12:d33e0cf91556, Jun 27 2016, 15:24:40) [MSC v.1500 64 bit (AMD64)] on win32
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import pyrfc
    >>>

可能是什么问题？或者如何跟踪导入以了解缺少哪个其他库？

Answer 1

在github上有issues与此相关，有些人通过以下方式解决了这个问题:
一人 reinstalled SAP SDK :

after some troubleshooting at least in my case was fixed after I re-downloaded the SAP SDK making sure I was downloading the Windows version.

另一个人 said :

If I uninstall pyrfc v2.0.1 and reinstall v1.9.93 using pyrfc-1.9.93-cp37-cp37m-win_amd64.whl, it works even without needing env var SAPNWRFC_HOME.