导入pycraf会引发DLL加载失败

Question

我尝试使用astropy和pycraf进行单位转换，但是当我尝试使用import pycraf时却收到错误消息ImportError: DLL load failed: The specified module could not be found.。它似乎来自scipy，但我可以import scipy很好。我正在Windows 10上使用Python 3.6.8 :: Anaconda custom (64-bit)。感谢您的宝贵时间。

WARNING: AstropyDeprecationWarning: astropy.utils.compat.funcsigs is now deprecated - use inspect instead [astropy.utils.compat.funcsigs]
Traceback (most recent call last):
  File ".\spectrum.py", line 2, in <module>
    import pycraf.conversions as cnv
  File "C:\ProgramData\Anaconda3\lib\site-packages\pycraf\__init__.py", line 38, in <module>
    from . import pathprof
  File "C:\ProgramData\Anaconda3\lib\site-packages\pycraf\pathprof\__init__.py", line 11, in <module>
    from .cyprop import *

  File "pycraf/pathprof/cyprop.pyx", line 23, in init pycraf.pathprof.cyprop
  File "C:\ProgramData\Anaconda3\lib\site-packages\pycraf\pathprof\heightprofile.py", line 11, in <module>
    from . import srtm
  File "C:\ProgramData\Anaconda3\lib\site-packages\pycraf\pathprof\srtm.py", line 37, in <module>
    from scipy.interpolate import RegularGridInterpolator, RectBivariateSpline
  File "C:\ProgramData\Anaconda3\lib\site-packages\scipy\interpolate\__init__.py", line 175, in <module>
    from .interpolate import *
  File "C:\ProgramData\Anaconda3\lib\site-packages\scipy\interpolate\interpolate.py", line 21, in <module>
    import scipy.special as spec
  File "C:\ProgramData\Anaconda3\lib\site-packages\scipy\special\__init__.py", line 641, in <module>
    from ._ufuncs import *
ImportError: DLL load failed: The specified module could not be found.

这是我非常简单的文件。

import astropy.units as u
import pycraf.conversions as cnv

power = 1 * u.W

print('{:.2f}'.format(power))
 # 1.00 W

print('{:.2f}'.format(power.to(cnv.dB_W)))
 # 0.00 dB(W)

print('{:.2f}'.format(power.to(cnv.dBm)))