我正在使用execnet package允许由不同的Python解释器解释的Python脚本之间进行通信.

以下代码(test_execnet.py)：

import execnet
    for python_version in ('python', 'python3'):
        try:
            gw = execnet.makegateway("popen//python="+python_version)
            ch = gw.remote_exec('channel.send(1/3)')
            res = ch.receive()
            print(python_version, ': ', res, sep ="")
        except:
            print('problems with ', python_version)

在命令行终端中完美运行,显示以下输出：

$python3 test_execnet.py 
python: 0
python3: 0.333333333333

但是,如果尝试从Eclipse IDE中运行相同的代码,则会出现以下错误：

'import site' failed; use -v for traceback
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "<string>", line 4, in <module>
  File "<string>", line 2, in <module>
  File "/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/site-packages/execnet/gateway_base.py", line 8, in <module>
    import sys, os, weakref
  File "/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/os.py", line 380, in <module>
    from _abcoll import MutableMapping  # Can't use collections (bootstrap)
  File "/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/_abcoll.py", line 54
    class Hashable(metaclass=ABCMeta):
                            ^
SyntaxError: invalid syntax
problems with  python
problems with  python3

注意：

> Eclipse版本：3.6.0
>为项目配置的PyDev解释器：python3
>“首选项/解释器-Python”的Python解释器：

> python(/usr/bin/python)
> python3(/Library/Frameworks/Python.Framework/Versions/3.1/Resources/Python.app/Contents/MacOS/Python

编辑：

我编写了一个代码来显示os.environ,如下所示：

for python_version in ('python', 'python3'):
    try:
        import os
        for item in os.environ:
            print(item, '= ', os.environ[item])
    except:
        print('problems with ', python_version)

我得到以下输出：

> eclipse_output.txt
> terminal_output.txt

可在eclipse_output.txt vs. terminal_output.pdf找到文件的FileMerge比较.

有什么提示吗？
谢谢

解决方法:

似乎pydev进行站点自定义,并且特别修改了内容以进行交互/控制台使用(从非常快速的浏览器http://github.com/aptana/Pydev/blob/master/plugins/org.python.pydev/pysrc/pydev_sitecustomize/sitecustomize.py判断).这对execnet介导的过程没有用或不适合.

您可以在调用execnet.makegateway之前尝试“ del os.environ [‘PYTHONPATH’]”,或者,要更加小心,只需删除它的sitecustomize部分.

hth,
霍尔格