Basic installation unsuccessful

- Ubuntu 12.04 LTS
- Printer HP Envy Photo 7830
- hp-check -t
  File "/usr/bin/hp-check", line 132
    except getopt.GetoptError, e:
                             ^
SyntaxError: invalid syntax

- Description:
I followed the instructions https://developers.hp.com/hp-linux-imaging-and-printing/install/install/index
Problems around step 8 :

RUNNING PRE-PACKAGE COMMANDS
----------------------------
warning: An error occurred running 'sudo dpkg --configure -a'
sudo dpkg --configure -a (Pre-depend step 1)
warning: An error occurred running 'sudo apt-get install --yes --force-yes -f'
sudo apt-get install --yes --force-yes -f (Pre-depend step 2)
sudo apt-get update (Pre-depend step 3)
OK

DEPENDENCY AND CONFLICT RESOLUTION
----------------------------------
Running 'sudo apt-get install --assume-yes python3-pip'
Please wait, this may take several minutes...
error: Package install command failed with error code 100
warning: Some HPLIP functionality might not function due to missing package(s). [['pillow']]
note: More information is available at http://hplipopensource.com/node/369

the address http://hplipopensource.com/node/369 returns to home page https://developers.hp.com/hp-linux-imaging-and-printing

Printer not recognized.

Sorry, but do not know what to do, cannot see where the problem comes from.
Thanks for your help.

JCZ