Some more updated information about :

1) Python on Sailfish :
- it has a wiki Sailfish/Python Development page;
- Python 3.3.3 (and later 3.4.0) is in Sailfish official repositories since Sailfish v1.0.3.8 (31/01/2014);
- it can be installed as a dependency for other software (gPodder, etc) or by manual installation with :
$ pkcon install python3-base
- it is expected to be accepted in Jolla Harbour "soon".

2) PyOtherSide (http://thp.io/2011/pyotherside/) :
- is in Sailfish official repositories since Sailfish v1.0.3.8 (31/01/2014);
- it can be installed as a dependency for other software (gPodder, etc) or by manual installation with :
$ pkcon install pyotherside-qml-plugin-python3-qt5
- has newer versions 1.1 and 1.2 released in 2014;
- is being used by more than 10 Sailfish softwares, and by BlackBerry (10) softwares;
- it is expected to be accepted in Jolla Harbour "soon";
- it as available in Arch Linux repositories and Ubuntu PPA;
- it is cited by the wiki Sailfish/Python Development page.

3) PyQt 5.1.1 :
- is available in OpenRepos.net, with version for Python 2.7 (pyqt) and version for Python 3 (python-pyqt);
- it is cited by the wiki Sailfish/Python Development page.

So Python 3 & Qt 5 development is well supported in Sailfish, so it is time for Python developers to release their softwares for Sailfish.