phablet@ubuntu-phablet:~$ apt-cache show python-smbus
Package: python-smbus
Priority: extra
Section: universe/python
Installed-Size: 53
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Original-Maintainer: Aurelien Jarno <aurel32@debian.org>
Architecture: armhf
Source: i2c-tools
Version: 3.1.1-1
Provides: python2.7-smbus
Depends: libc6 (>= 2.4), python (>= 2.7), python (<< 2.8)
Recommends: i2c-tools
Filename: pool/universe/i/i2c-tools/python-smbus_3.1.1-1_armhf.deb
Size: 7520
MD5sum: 3afcc3668a4721b43926a855a9e35b1a
SHA1: d1df08a423801e0aefd0c202e8d332777eb9be43
SHA256: fd98f41b08be40b924b27f450380bc3e37eb3c09118ed7bc65a4737beee1c08b
Description-en: Python bindings for Linux SMBus access through i2c-dev
 This Python module allows SMBus access through the I2C /dev interface on
 Linux hosts.  The host kernel must have I2C support, I2C device interface
 support, and a bus adapter driver.
Description-md5: c36ce675a1bddacc672388af4111ac28
Homepage: http://www.lm-sensors.org
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu

phablet@ubuntu-phablet:~$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 15.04
Release:	15.04
Codename:	vivid

phablet@ubuntu-phablet:~$ apt-cache policy python-smbus
python-smbus:
  Installiert:           (keine)
  Installationskandidat: 3.1.1-1
  Versionstabelle:
     3.1.1-1 0
        500 http://ports.ubuntu.com/ubuntu-ports/ vivid/universe armhf Packages
phablet@ubuntu-phablet:~$