3. python basics python3 is not installed in MAC OSX

Listing basic python related basic operations.

1. Confirming version 
$ python --version
Python 2.7.10

2. Checking if python3 is installed 
$ python3
-bash: python3: command not found

3. Searching python in brew. I will be working with python2 without upgrading python3. there are so many compatibility issues reported. 
$ brew search python
==> Searching local taps...
app-engine-python   gst-python          micropython         python3
boost-python        ipython             python              wxpython
boost-python@1.59   ipython@5           python-markdown     zpython
==> Searching taps on GitHub...
caskroom/cask/kk7ds-python-runtime       caskroom/cask/awips-python
caskroom/cask/mysql-connector-python
==> Searching blacklisted, migrated and deleted formulae...

$

3. Still working with python2 without upgrading python3. there are so many compatibility issues reported. 
$ brew

Reference: 
https://qiita.com/7110/items/1aa5968022373e99ae28

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