从pyxdameraulevenshtein导入会出现以下错误
pyxdameraulevenshtein==1.5.3
pandas==1.1.4
scikit-learn==0.20.2.
Numpy是1.16.1。
在Python 3.6中工作良好,在Python 3.7中问题。
有人在使用Python 3.7(3.7.9)时遇到过类似的问题吗?
from pyxdameraulevenshtein import normalized_damerau_levenshtein_distance as norm_dl_dist
__init__.pxd:242: in init pyxdameraulevenshtein
???
E ValueError: numpy.ndarray size changed, may indicate binary incompatibility. Expected 88 from C header, got 80 from PyObject
我在树莓派3中也面临着同样的问题。实际上这个错误发生在熊猫身上。虽然tensorflow需要numpy~=1.19.2,但是pandas不符合它。所以,我已经升级(因为降级不是)我的numpy到最新版本,一切都很好!!!!。
root@raspberrypi:/home/pi# python3
Python 3.7.3 (default, Jan 22 2021, 20:04:44)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy as np
>>> np.__version__
'1.21.5'
>>> import pandas as pd
>>> pd.__version__
'1.3.5'
>>> import tensorflow as tf
>>> tf.__version__
'2.4.0'
>>> tf.keras.__version__
'2.4.0'
>>> tf.keras.layers
<module 'tensorflow.keras.layers' from '/usr/local/lib/python3.7/dist-packages/tensorflow/keras/layers/__init__.py'>
这里也有同样的问题- https://github.com/bitsy-ai/tensorflow-arm-bin/issues/5
Tensorflow来源:https://github.com/bitsy-ai/tensorflow-arm-bin
不升级numpy的解决方案
虽然升级numpy版本通常可以解决这个问题,但并不总是可行的。一个很好的例子是,当你使用tensorflow==2.6.0时,它与最新的numpy版本不兼容(它需要~=1.19.2)。
正如在FZeiser的回答中已经提到的,在1.20.0版本中numpys C API发生了变化。有一些包在构建时依赖于这个C API,例如pyxdameraulevenshtein。鉴于pips依赖解析器不保证安装包的任何顺序,可能会发生以下情况:
pip figures out that it needs to install numpy and it chooses the latest version, 1.21.2 as of the time writing this answer.
It then builds a package that depends on numpy and its C API, e.g. pyxdameraulevenshtein. This package is now compatible with numpy 1.21.2 C API.
At a later point pip needs to install a package that has a requirement for an older version of numpy, e.g. tensorflow==2.6.0 which would try to install numpy==1.19.5. As a result, numpy==1.21.2 is uninstalled and the older version is installed.
When running code that uses pyxdameraulevenshtein, its current installation relies on the updated numpy C API, yet the numpy version was downgraded which would result in the error.
解决方案
您应该使用过时的numpy C API重新构建包,以确保它与当前安装的numpy版本兼容。例如,对于pyxdameraulevenshtein:
pip uninstall pyxdameraulevenshtein
pip install pyxdameraulevenshtein --no-binary pyxdameraulevenshtein