python - How to install python3 version of package via pip on Ubuntu?

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I have both
python2.7 and python3.2 installed in
Ubuntu 12.04.
The symbolic link
python links to
python2.7.

When I
type:

sudo pip install
            package-name

It will
default install python2 version of
package-name.

Some
package supports both python2 and
python3.
How to install
python3 version of package-name via
pip?

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class="normal">Answer

You may
want to build a virtualenv of python3, then install packages of
python3 after activating the virtualenv. So your system won't be messed up
:)

This could be something
like:

virtualenv -p
            /usr/bin/python3 py3env
source py3env/bin/activate
pip install
            package-name