ImportError:没有名为“multiprocessing.forking”的模块

Question

我正在运行Python3.5，并试图在命令行中运行this django app中的一些代码，这已经发生了：

C:\Users\username\Envs\mysite> python service.py --startup=auto install
Traceback (most recent call last):
  File "service.py", line 14, in <module>
    from django_windows_tools.service import DjangoService,test_commands
  File "C:\Users\username\AppData\Local\Programs\Python\Python35\lib\site-packages\django_windows_tools\service.py", line 39, in <module>
    import multiprocessing.forking
ImportError: No module named 'multiprocessing.forking'

我真的不确定是什么导致了这一切。

Answer 1

python v2.6/2.7默认安装了forking.py，但没有安装v3.5.1

[root@localhost usr]# find /usr -name multiprocessing
/usr/lib64/python2.7/multiprocessing
/usr/lib64/python3.5/multiprocessing
[root@localhost usr]# find /usr -name forking.py
/usr/lib64/python2.7/multiprocessing/forking.py

python3.5.1由于某些原因没有forking.py，你运行的包不支持python3，你可以在git repo上报告问题或者用python2安装它。

[root@localhost usr]# python3
Python 3.5.1 (default, Mar  4 2016, 15:21:15)
[GCC 6.0.0 20160302 (Red Hat 6.0.0-0.14)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import multiprocessing
>>> import multiprocessing.forking
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named 'multiprocessing.forking'

而python2没有任何问题

[root@localhost usr]# python2
Python 2.7.12 (default, Sep  2 2016, 14:46:00)
[GCC 6.1.1 20160621 (Red Hat 6.1.1-3)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import multiprocessing
>>> import multiprocessing.forking