python dependencies

dep.bat

@echo off

set PYTHONPATH=%~dp0..\..
python %~dp0..\py\dependencies.py %*

REM cli dep %*

dependencies.py

import os
import sys
from lib.py.paths import py_path

# try:
#   import requests
# except ImportError:
#   print("Trying to Install required module: requests\n")
#   os.system('python -m pip install requests')

req_path = os.path.join(py_path, "requirements.txt")

class Dependencies:
    def freeze(self):
        os.system("python -m pip freeze > " + req_path)
        os.system("notepad " + req_path)

    def install(self):
        os.system("python -m pip install -r " + req_path)

if __name__ == "__main__":
    dep = Dependencies()
    if sys.argv[1].lower() == "freeze":
        dep.freeze()
    if sys.argv[1].lower() == "install":
        dep.install()
    if sys.argv[1].lower() == "-h" or sys.argv[1].lower() == "--help":
        help = '''
        Dependency manager.

        Usage: [freeze] [install] [-h,--help]

        freeze      :   The pip dependencies are dumped into requirements.txt
        install     :   The pip dependencies are installed from requirements.txt
        -h|--help   :   Displays the usage of the command and the help of a list of common options
        '''
        print(help)