Multiple versions of Python packages (2.7 vs 3.4)

[Miroslav Lachman]

I checked that most files are installed in versioned subdirectory, for 
example python2.7/site-packages, some tools have versioned binaries like 
/usr/local/bin/pip-2.7 but they have also symlink /usr/local/bin/pip. 
Are there any way to create / install those packages without creating 
this symlink?
If I didn't miss something the symlinks are the only common files for 
both versions so it will be overwritten by the later installation or 
upgrade. Or not?

Miroslav Lachman