pip install Celery安装错误

[rysinal]

Downloading/unpacking Celery
Downloading celery-4.0.2-py2.py3-none-any.whl (396kB): 396kB downloaded
Downloading/unpacking billiard>=3.5.0.2,<3.6.0 (from Celery)
Downloading billiard-3.5.0.2.tar.gz (157kB): 157kB downloaded
Running setup.py (path:/tmp/pip_build_root/billiard/setup.py) egg_info for package billiard
Traceback (most recent call last):
File "", line 17, in
File "/tmp/pip_build_root/billiard/setup.py", line 90, in
raise ValueError('Versions of Python before 2.7 are not supported')
ValueError: Versions of Python before 2.7 are not supported
Complete output from command python setup.py egg_info:
Traceback (most recent call last):

File "", line 17, in

File "/tmp/pip_build_root/billiard/setup.py", line 90, in

raise ValueError('Versions of Python before 2.7 are not supported')

ValueError: Versions of Python before 2.7 are not supported

---

Cleaning up...
Command python setup.py egg_info failed with error code 1 in /tmp/pip_build_root/billiard
Storing debug log for failure in /root/.pip/pip.log

是按照readme文档步骤安装的，谢谢