wget https://www.python.org/ftp/python/3.4.4/Python-3.4.4.tgz
ls
tar xf Python-3.4.4.tgz
mkdir /usr/local/python3
cd Python-3.4.4
ls
./configure --prefix=/usr/local/python3
make all
make install
make clean
make distclean
/usr/local/python3/bin/python3 -V
python -V
mv /usr/bin/python /usr/bin/python2.6.6
ln -s /usr/local/python3/bin/python3 /usr/bin/python
python -V
vim /usr/bin/yum
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip
pip install --upgrade pip
# pip install scrapy
# yum install install libmysqlclient-dev python3-dev python-devel mysql-devel mysql mysql-dev -y
# wget https://files.pythonhosted.org/packages/a2/37/298f9547606c45d75aa9792369302cc63aa4bbcf7b5f607560180dd099d2/Twisted-17.9.0.tar.bz2
# tar xf Twisted-17.9.0.tar.bz2
# cd Twisted-17.9.0
# python setup.py install
# pip install pymongo
# pip install -r requirement.txt