“python-m django”在virtualenv中给出了相互冲突的消息

我创建了一个virtualenv:

virtualenv --python=/usr/local/bin/python2.7 workoutpy2.7 

我正在开发一个健身日记网络应用程序,因此得名。 然后我在其中安装了django Unrel:

pip install git+https://github.com/django-nonrel/django@nonrel-1.5

然后是django Unrel的django工具箱:

pip install git+https://github.com/django-nonrel/djangotoolbox

然后是mongodb引擎:

pip install git+https://github.com/django-nonrel/mongodb-engine

python -m django

并得到以下输出:

/Users/sahandzarrinkoub/Documents/Programming/Web/Django/workoutpy2.7/bin/python: No module named django.__main__; 'django' is a package and cannot be directly executed

这是什么意思?作为记录,以这种方式安装的任何软件包都会发生同样的情况。看看这个:

(workoutpy2.7) Sahands-MacBook-Pro:workoutpy2.7 sahandzarrinkoub$ pip install pymongo
Requirement already satisfied: pymongo in ./lib/python2.7/site-packages
(workoutpy2.7) Sahands-MacBook-Pro:workoutpy2.7 sahandzarrinkoub$ python -m pymongo
/Users/sahandzarrinkoub/Documents/Programming/Web/Django/workoutpy2.7/bin/python: No module named pymongo.__main__; 'pymongo' is a package and cannot be directly executed

感谢您的帮助。