无法在 MAC 上导入 python 模块 lxml

Question

无法从 MAC 上的终端导入 lxml。得到以下错误

错误：

python
Python 2.7.14 (v2.7.14:84471935ed, Sep 16 2017, 12:01:12) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from lxml import etree
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/lxml/etree.so, 2): Symbol not found: _PyUnicodeUCS4_AsASCIIString
  Referenced from: /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/lxml/etree.so
  Expected in: dynamic lookup

>>> 

'import lxml' works fine

Python 路径

which python
/Library/Frameworks/Python.framework/Versions/2.7/bin/python

当我寻找 lxml 安装时，一切看起来都很好

pip install lxml
Requirement already satisfied: lxml in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages

pip2 install lxml
Requirement already satisfied: lxml in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages

我在这里缺少什么？有什么问题？你能帮帮我吗？

解决方案： 通过卸载lxml 并由pip install lxml --no-binary :all: 重新安装解决了它

Answer 1

你已经用 UCS4（4 字节 unicode）编译了 python，用 UCS2 编译了 lxml。即，扩展名和 python 不兼容。改变其中之一——即用--enable-unicode=ucs2重新编译python或用UCS4重新编译lxml。