install.py

import os
import sys
import getopt


def usage():
    print("\nUsage:")
    print("install.py -v python_version | -h help\n")
    print("-v \t Options: Any python version installed in the system.")
    print("Specifies which python version the libraries should be installed to.\nPython version is by default set to the python path\n")
    print("-h \t Help: Get information on how to run the file\n")
    
def arg_parse(argv):
    """

    """
    python_version = ""
    try:
        opts, args = getopt.getopt(argv, "v:", ["python_version"])

    except getopt.GetoptError:
        usage()
        sys.exit(2)

    for opt, arg in opts:
        if opt == "-h":
            usage()
            sys.exit()
        if opt == "-v":
            python_version = arg

    return python_version 


def main(python_version):
    if not python_version:
        os.system("pip install -r requirements.txt")
    else:
        os.system(python_version + " -m pip install -r requirements.txt")


if __name__ == "__main__":
    python_version = arg_parse(sys.argv[1:])
    main(python_version)