sudo apt-get install python-pip python-dev libpq-dev postgresql

postgresql-contrib
Reading package lists... Done
Building dependency tree
Reading state information... Done
python-dev is already the newest version.
python-pip is already the newest version.
libpq-dev is already the newest version.
The following extra packages will be installed:
  postgresql-10
Suggested packages:
  postgresql-doc locales-all
The following NEW packages will be installed:
  postgresql postgresql-10 postgresql-contrib
0 upgraded, 3 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/4,910 kB of archives.
After this operation, 22.2 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Selecting previously unselected package postgresql-10.
(Reading database ... 272867 files and directories currently installed.)
Preparing to unpack .../postgresql-10_10.3-1.pgdg14.04+1_amd64.deb ...
Unpacking postgresql-10 (10.3-1.pgdg14.04+1) ...
Selecting previously unselected package postgresql.
Preparing to unpack .../postgresql_10+190.pgdg14.04+1_all.deb ...
Unpacking postgresql (10+190.pgdg14.04+1) ...
Selecting previously unselected package postgresql-contrib.
Preparing to unpack .../postgresql-contrib_10+190.pgdg14.04+1_all.deb ...
Unpacking postgresql-contrib (10+190.pgdg14.04+1) ...
Processing triggers for postgresql-common (190.pgdg14.04+1) ...
Building PostgreSQL dictionaries from installed myspell/hunspell packages...
  en_us
Removing obsolete dictionary files:
Setting up postgresql-10 (10.3-1.pgdg14.04+1) ...
Configuring already existing cluster (configuration: /etc/postgresql/10/main, data: /var/lib/postgresql/10/main, owner: 118:126)
Error: move_conffile: required configuration file /var/lib/postgresql/10/main/postgresql.conf does not exist
Error: could not create default cluster. Please create it manually with

  pg_createcluster 10 main --start

or a similar command (see 'man pg_createcluster').
update-alternatives: using /usr/share/postgresql/10/man/man1/postmaster.1.gz to provide /usr/share/man/man1/postmaster.1.gz (postmaster.1.gz) in auto mode
invoke-rc.d: unknown initscript, /etc/init.d/postgresql not found.
dpkg: error processing package postgresql-10 (--configure):
 subprocess installed post-installation script returned error exit status 100
dpkg: dependency problems prevent configuration of postgresql:
 postgresql depends on postgresql-10; however:
  Package postgresql-10 is not configured yet.

dpkg: error processing package postgresql (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of postgresql-contrib:
 postgresql-contrib depends on postgresql-contrib-10; however:
  Package postgresql-contrib-10 is not installed.
  Package postgresql-10 which provides postgresql-contrib-10 is not configured yet.

dpkg: error processing package postgresql-contrib (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                          No apport report written because the error message indicates its a followup error from a previous failure.
                                                    Errors were

encountered while processing:
 postgresql-10
 postgresql
 postgresql-contrib
E: Sub-process /usr/bin/dpkg returned an error code (1)