Tried to install requirements, met with an error message

[asirota12]

Could not find a version that satisfies the requirement functools32==3.2.3.post2 (from -r requirements.txt (line 6)) (from versions: 3.2.3-2, 3.2.3-1, 3.2.3-2, 3.2.3-1)

[rogwan]

Python3.4 venv meets the same issue:

Collecting functools32==3.2.3.post2 (from -r requirements.txt (line 6))
Downloading https://pypi.doubanio.com/packages/5e/1a/0aa2c8195a204a9f51284018562dea77e25511f02fe924fac202fc012172/functools32-3.2.3-2.zip
Complete output from command python setup.py egg_info:
This backport is for Python 2.7 only.

ps, pip install -U pip, still not works.

[Maxcharm]

I ran into the same problem on Mac OSX, and this is how I solved it:
deactivate
//only required if the virtual environment is still active
virtualenv venv --python=python2.7
//specify the version of python in virtualenv
source venv/bin/activate
pip install -r requirements.txt