Django 1.9安装SyntaxError: invalid syntax

Question

Django 1.9安装SyntaxError: invalid syntax

13

我正在尝试在启用virtualenv的Ubuntu Box（14.04 LTS）中安装Django 1.9，但我遇到了这个奇怪的安装问题。

(venv)nix1947$ pip install django
Downloading/unpacking django
  Downloading Django-1.9-py2.py3-none-any.whl (6.6MB): 6.6MB downloaded
Installing collected packages: django
*** Error compiling '/home/nix1947/projects/newsportal/venv/build/django/django/conf/app_template/apps.py'...
  File "/home/nix1947/projects/newsportal/venv/build/django/django/conf/app_template/apps.py", line 4
    class {{ camel_case_app_name }}Config(AppConfig):
          ^
SyntaxError: invalid syntax

*** Error compiling '/home/nix1947/projects/newsportal/venv/build/django/django/conf/app_template/models.py'...
  File "/home/nix1947/projects/newsportal/venv/build/django/django/conf/app_template/models.py", line 1
    {{ unicode_literals }}from django.db import models
                             ^
SyntaxError: invalid syntax

Successfully installed django
Cleaning up...

这是Django源代码中的问题吗？还是我漏掉了什么？

我使用的是虚拟环境中启用的python3，命令是virtualenv -p /usr/bin/python3 venv，我正在使用的pip版本是

pip 1.5.4 from /home/nix1947/projects/newsportal/venv/lib/python3.4/site-packages (python 3.4)

虚拟环境版本为

(venv)nix1947$ virtualenv --version
1.11.4

有什么问题，能有人指导我吗？

- shining

1个回答

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- Leistungsabfall · Accepted Answer

这是一个常见问题，由于setuptools（5.5.x）版本过旧引起：

When installing Django 1.9+ with setuptools 5.5.x, you’ll see:
Compiling django/conf/app_template/apps.py ...   File
"django/conf/app_template/apps.py", line 4
    class {{ camel_case_app_name }}Config(AppConfig):
          ^ SyntaxError: invalid syntax

Compiling django/conf/app_template/models.py ...   File
"django/conf/app_template/models.py", line 1
    {{ unicode_literals }}from django.db import models
                             ^ SyntaxError: invalid syntax
It’s safe to ignore these errors (Django will still install just fine), but you can avoid them by upgrading setuptools to a more recent version. If you’re using pip, you can upgrade pip using pip install -U pip which will also upgrade setuptools.

(Source: https://docs.djangoproject.com/en/1.9/releases/1.9/#syntaxerror-when-installing-django-setuptools-5-5-x)

解决方法是先升级pip（这也会升级setuptools），然后再次安装django：

pip install -U pip
pip install django