$ ls -l /usr/bin/python*
lrwxrwxrwx 1 root root       9 Sep 23  2016 /usr/bin/python -> python2.7
lrwxrwxrwx 1 root root       9 Sep 23  2016 /usr/bin/python2 -> python2.7
-rwxr-xr-x 1 root root 8049696 Apr 12 10:34 /usr/bin/python2.7
lrwxrwxrwx 1 root root      33 Nov 19 03:35 /usr/bin/python2.7-config -> x86_64-linux-gnu-python2.7-config
lrwxrwxrwx 1 root root      16 Dec  9  2015 /usr/bin/python2-config -> python2.7-config
lrwxrwxrwx 1 root root       9 Sep 23  2016 /usr/bin/python3 -> python3.5
-rwxr-xr-x 2 root root 4460336 Nov 17 13:23 /usr/bin/python3.5
lrwxrwxrwx 1 root root      33 Nov 17 13:23 /usr/bin/python3.5-config -> x86_64-linux-gnu-python3.5-config
-rwxr-xr-x 2 root root 4460336 Nov 17 13:23 /usr/bin/python3.5m
lrwxrwxrwx 1 root root      34 Nov 17 13:23 /usr/bin/python3.5m-config -> x86_64-linux-gnu-python3.5m-config
lrwxrwxrwx 1 root root      16 Mar 23  2016 /usr/bin/python3-config -> python3.5-config
lrwxrwxrwx 1 root root      10 Sep 23  2016 /usr/bin/python3m -> python3.5m
lrwxrwxrwx 1 root root      17 Mar 23  2016 /usr/bin/python3m-config -> python3.5m-config
lrwxrwxrwx 1 root root      16 Dec  9  2015 /usr/bin/python-config -> python2.7-config