如何解决 No module named 'scipy._lib'

在运行如下代码时

```python
# -*- encoding:utf-8 -*-
import numpy as np
import numpy.fft as nf
import scipy.io.wavfile as wf
import matplotlib.pyplot as plt
import IPython.display as ipd

出现如下错误

---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-4-9a6aed801c4f> in <module>()
      2 import numpy as np
      3 import numpy.fft as nf
----> 4 import scipy.io.wavfile as wf
      5 import matplotlib.pyplot as plt
      6 import IPython.display as ipd

~\AppData\Roaming\Python\Python37\site-packages\scipy\__init__.py in <module>()
     72 
     73 # Import numpy symbols to scipy name space (DEPRECATED)
---> 74 from ._lib.deprecation import _deprecated
     75 import numpy as _num
     76 linalg = None

ModuleNotFoundError: No module named 'scipy._lib'

重新安装scipy无法解决

试试 python提示符
import scipy
import scipy.io
import scipy.io.wavfile

看看提示都有啥。
不行就 把 scipy 卸载重装试试

pip uninstall scipy && conda install -c conda-forge scipy