Question

我已经使用pip（2.x）和pip-3.5成功安装了gnureadline。虽然在Python2.7中导入它可以很好地工作，但在Python 3.5中它会引发以下异常：

Python 3.5.1 (default, Jan 31 2016, 04:03:04)
[GCC 4.2.1 Compatible Apple LLVM 7.0.2 (clang-700.1.81)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import gnureadline
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: dlopen(/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/gnureadline.so, 2): Symbol not found: _PyInt_AsLong
  Referenced from: /opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/gnureadline.so
  Expected in: flat namespace
 in /opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/gnureadline.so

奇怪的是python在Python2.7路径中查找包。

该平台是OSX 10.11.3。

Answer 1

您必须检查PYTHONHOME env变量。

使用echo $PYTHONHOME进行检查，它应指向3.5版本，
如果不成立，请按以下命令修复 export PYTHONHOME=/full path to appropriate python libs/

Answer 2

在检查了sys.path变量为BasicWolf之后，我发现2.7站点包是独立于我运行的python版本而包含的。这是因为我的.bashrc文件中覆盖了PYTHONPATH env变量：

export PYTHONPATH=~/Library/Python/2.7/lib/python/site-packages/

无法在Python3.x（Mac OS）中导入gnureadline包

2 个答案: