Alternative Python installation in EC2

There are case that we can not just upgrade the python to match applications requirement. EC2 instance uses Python 2.7 and I needed to use Python 3.4. Upgrading the Python might cause unexpected effects on Amazon scripts so I decided to have two Pythons without any conflict.

To start, download the desired version. Enter the directory and follow these commands:

./configure --prefix=/usr/local --enable-shared LDFLAGS="-Wl,-rpath /usr/local/lib"
make
make altinstall
/usr/local/bin/python3.4 -V
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