命令“python setup.py egg_info”在 /private/tmp/pip-sTRicb-build/ 中失败，错误代码为 1

Question

我正在尝试安装 Django，但出现以下错误，请告诉我问题出在哪里。

谢谢，

(ENV) AP-MacBook-Pro:bin $ sudo -H pip install django/
Processing ./django
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/tmp/pip-sTRicb-build/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 60, in <module>
        @functools.lru_cache()
    AttributeError: 'module' object has no attribute 'lru_cache'

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /private/tmp/pip-sTRicb-build/

Answer 1

lru_缓存仅适用于 Python 3。

笔记：问题表明安装步骤中使用了 python 2。此异常“AttributeError: 'module' object has no attribute 'lru_cache'”显示了这一点。您必须将 python 3 与 django 2.0 一起使用，因为 django 2.0 仅支持 python 3。