apt-get install pyenv 
apt-get install virtualenv 

brew install pyenv 
brew install virtualenv 

pyenv install 3.4.1
pyenv rehash
pyenv local 3.4.1
virtualenv -p ~/.pyenv/versions/3.4.1/bin/python3.4 my_env
source my_env/bin/activate

pip install -r requirement.txt 

twitter

*You execute python 

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