Cleaned up installation: pinned deps versions and added cli extra-requires

Author: MeNsaaH

requirements-dev.txt

@@ -0,0 +1 @@
+blessed==1.15.0

requirements.txt

@@ -0,0 +1,8 @@
+-r main.txt
+-r cli.txt
+pprint==0.1
+sphinx==2.2.0
+sphinx-rtd-theme==0.4.3
+m2r==0.2.1
+pytest==5.1.1
+pylint==2.3.1

requirements/cli.txt

@@ -0,0 +1,3 @@
+lxml==4.4.1
+aiohttp==3.6.1
+beautifulsoup4==4.8.0

requirements/dev.txt

@@ -26,4 +26,4 @@
 from search_engine_parser.core import *
 
 name = "search-engine-parser"  #pylint: disable=invalid-name
-__version__ = "0.5.1"
+__version__ = "0.5.2"

requirements/main.txt

@@ -1,23 +1,33 @@
-import os
-import sys
+import re
 import setuptools
-from setuptools.command.install import install
-from search_engine_parser import __version__ as VERSION
 
-CURRENT_DIR = os.getcwd()
-REQUIREMENTS = 'requirements.txt'
+REQUIREMENTS = 'requirements/main.txt'
+CLI_REQUIREMENTS = 'requirements/cli.txt'
+
+REQUIRED_PYTHON = (3, 5)
+
 requires = [line.strip('\n') for line in open(REQUIREMENTS).readlines()]
+requires_cli = [line.strip('\n') for line in open(CLI_REQUIREMENTS).readlines()]
 
 with open("README.md", "r") as fh:
     long_description = fh.read()
 
+# Trying to load version directly from `search-engine-parser` module attempts
+# to load __init__.py which will try to load other libraries not yet installed
+with open("search_engine_parser/__init__.py", "rt", encoding="utf8") as f:
+    VERSION = re.search(r'__version__ = "(.*?)"', f.read(), re.M).group(1)
+
 setuptools.setup(
     name="search-engine-parser",
     version=VERSION,
     author='Domnan Diretnan, Mmadu Manasseh',
     author_email="[email protected]",
     description="scrapes search engine pages for query titles, descriptions and links",
     url="https://github.com/bisoncorps/search-engine-parser",
+    project_urls={
+        "documentation":"https://search-engine-parser.readthedocs.io/en/latest",
+        "source": "https://github.com/bisoncorps/search-engine-parser",
+    },
     packages=setuptools.find_packages(),
     install_requires=requires,
     long_description=long_description,
@@ -33,20 +43,21 @@
         yandex \
         stackoverflow \
         github \
-        baidu ' ,
-    entry_points={
-                    'console_scripts': 
-                    [
-                         'pysearch=search_engine_parser.core.cli:runner'
-                    ]
-                  },
-    classifiers=(
+        baidu ',
+    entry_points={'console_scripts': [
+        'pysearch=search_engine_parser.core.cli:runner'
+    ]},
+    classifiers=[
         "Programming Language :: Python :: 3",
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
-    ),
+    ],
     package_data={
         '': ['*.*'],
     },
     include_package_data=True,
+    extras_require={
+        'cli': requires_cli
+    },
+    python_requires='>={}.{}'.format(*REQUIRED_PYTHON),
 )