PIP无法在VIrtualenv中安装Django

Question

(myenv) wanjila@wanjila:~/Desktop/Python-Area/projects/Djangular$ pip freeze
djangorestframework==3.7.3
pkg-resources==0.0.0
(myenv) wanjila@wanjila:~/Desktop/Python-Area/projects/Djangular$ pip install django
Collecting django
  Using cached Django-2.0.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-qAnv7G/django/setup.py", line 32, in <module>
        version = __import__('django').get_version()
      File "django/__init__.py", line 1, in <module>
        from django.utils.version import get_version
      File "django/utils/version.py", line 61, in <module>
        @functools.lru_cache()
    AttributeError: 'module' object has no attribute 'lru_cache'

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I keep getting that error whenever i try to pip install django while inside my virtualenv. How can i fix this.

Answer 1

作为wim答案的替代方案，如果由于某种原因无法升级Python版本，可以安装仍然与Python 2.7兼容的Django 1.11：

pip install 'django<2.0'

Answer 2

Make sure your Python version in the virtualenv is Python 3.4+.

Django 2.0 only supports Python 3.4+, and functools.lru_cache is only available in 3.2+.

To check the Python version in your current virtualenv:

python --version

To create a new virtualenv with python 3:

python3 -m venv venv --prompt=myenv

Answer 3

This error is because of wrong picking of pip and python version . You can solve it by adding below lines in the ~/.bash_profile

  alias python='python3'
  alias pip='pip3.6' 

After that close the terminal and run the following command to install Django

  pip install Django==2.0

Answer 4

对于最新版本的Django，需要python 3，因此请尝试安装

pip install django==1.11