Установка модуля через pip для python

Я пытался установить модуль 'PyGreSQL' (pgdb) через pip3 в Ubuntu 14.04.3 (x86_64)

pip3 install PyGreSQL

, но у меня ошибка:

Downloading/unpacking PyGreSQL
Downloading PyGreSQL-5.0.4.tar.gz (637kB): 637kB downloaded
Running setup.py (path:/tmp/pip_build_root/PyGreSQL/setup.py) egg_info for package PyGreSQL
/bin/sh: 1: pg_config: not found
Traceback (most recent call last):
File "<string>", line 17, in <module>
File "/tmp/pip_build_root/PyGreSQL/setup.py", line 88, in <module>
pg_version = pg_version()
File "/tmp/pip_build_root/PyGreSQL/setup.py", line 82, in pg_version
match = re.search(r'(\d+)\.(\d+)', pg_config('version'))
File "/tmp/pip_build_root/PyGreSQL/setup.py", line 74, in pg_config
raise Exception("pg_config tool is not available.")
Exception: pg_config tool is not available.
Complete output from command python setup.py egg_info:
/bin/sh: 1: pg_config: not found
Traceback (most recent call last):
File "<string>", line 17, in <module>
File "/tmp/pip_build_root/PyGreSQL/setup.py", line 88, in <module>
pg_version = pg_version()
File "/tmp/pip_build_root/PyGreSQL/setup.py", line 82, in pg_version
match = re.search(r'(\d+)\.(\d+)', pg_config('version'))
File "/tmp/pip_build_root/PyGreSQL/setup.py", line 74, in pg_config
raise Exception("pg_config tool is not available.")
Exception: pg_config tool is not available.

• python --version - Python 3.4.3

• which pip3 - /usr/bin/pip3

Можете ли вы помочь мне решить Эта проблема?