How to install modules dependencies/packages for Python on Mac

On my Mac OS EI Capitan, there are both python 2.7 and python 3 available.  I don't know whether there came from the OS or installed ages ago.

To install a new module, the following command can be used.

python -m pip install SomePackage

figure1

For me, python 2.7 doesn't have pip installed. Python3 works.

[bash]

fengnz@mac:~/GitLocal/seq2seq-attn > python -m pip install h5py

/usr/bin/python: No module named pip

[/bash]

installing pip through easy_install didn't work either.

[bash]

fengnz@mac:~/GitLocal/seq2seq-attn > sudo easy_install pip

Password:

Sorry, try again.

Password:

Searching for pip

Reading https://pypi.python.org/simple/pip/

Download error on https://pypi.python.org/simple/pip/: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590) -- Some packages may not be found!

Couldn't find index page for 'pip' (maybe misspelled?)

Scanning index of all packages (this may take a while)

Reading https://pypi.python.org/simple/

Download error on https://pypi.python.org/simple/: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590) -- Some packages may not be found!

No local packages or download links found for pip

error: Could not find suitable distribution for Requirement.parse('pip')

[/bash]

python3 -m pip install h5py