setup.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
#Imports
from setuptools import setup, find_packages  # Always prefer setuptools over distutils
from codecs import open  # To use a consistent encoding
import os
from os import path
import sys
import subprocess

def print_frog():
    frog ="""
     "         _,-.   "
     " ,-. ,--'  o )  "
     " \\(,' '  ,,-'  "
     ",-.\\-.__,\\\\_ "
     "\\(`--'    `\\  "
     ''
    """
    print(frog)

def print_a_header(message="-"):
    """Header

    This function will output a message in a header

    Keyword Arguments:
        message {str} -- [the message string] (default: {"-"})
    """
    print("-".center(60,'-'))
    print(message.center(60,'-'))
    print("-".center(60,'-'))
    print()

def check_if_exiftool_is_already_installed():
    """Requirements

    This function will check if Exiftool is installed
    on your system

    Return: True if Exiftool is Installed
            False if not
    """
    result = 1;
    command = ["exiftool", "-ver"]

    with open(os.devnull, "w") as fnull:
        result = subprocess.call(
            command,
            stdout = fnull,
            stderr = fnull
        )
    #Exiftool is not installed
    if result != 0:
        print_a_header('Exiftool needs to be installed on your system')
        print_a_header('Visit http://www.sno.phy.queensu.ca/~phil/exiftool/')
        return False
    else:
        return True


#Begin the installation
here = path.abspath(path.dirname(__file__))

setup(
    name='pyexifinfo',
    version='0.4.0',
    description="Simple Metadata extraction using Exiftool",
    url='https://github.com/guinslym/pyexifinfo',
    author='Guinslym',
    author_email='guinslym@gmail.com',
    license='GNU GPLv2',
    packages=['pyexifinfo'],
    classifiers=[
        'Development Status :: 5 - Production/Stable',
        'Intended Audience :: Developers',
        'License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)',
        'Programming Language :: Python :: 2',
        'Programming Language :: Python :: 2.6',
        'Programming Language :: Python :: 2.7',
        'Programming Language :: Python :: 3',
        'Programming Language :: Python :: 3.2',
        'Programming Language :: Python :: 3.3',
        'Programming Language :: Python :: 3.4',
        'Topic :: Internet :: WWW/HTTP :: Indexing/Search'
    ],
    keywords='exiftool reader stats metadata image linux',

    #packages=find_packages(exclude=['contrib', 'docs', 'tests*']),


)


result = check_if_exiftool_is_already_installed()
if not result:
    print_frog()
    print_a_header('Exiftool needs to be installed on your system')
    print_a_header('Visit http://www.sno.phy.queensu.ca/~phil/exiftool/')
    print_frog()