Hm, this bug here existed already in 2012, whereas bug 1248642 is a regression from a change in binutils in 2013. Also, this missing libpthread.so.0 link problem shouldn't apply since the main application, python, is definitely linked to it:
$ objdump -pR /usr/bin/python | grep libpthread NEEDED libpthread.so.0
Hm, this bug here existed already in 2012, whereas bug 1248642 is a regression from a change in binutils in 2013. Also, this missing libpthread.so.0 link problem shouldn't apply since the main application, python, is definitely linked to it:
$ objdump -pR /usr/bin/python | grep libpthread
NEEDED libpthread.so.0