def install_requirements_command(requirements_path):
    '''install requirements.txt'''
    cmds = 'cd ' + requirements_path + ' && {0} -m pip install --user -r requirements.txt'
    #TODO refactor python logic
    if sys.platform == "win32":
        cmds = cmds.format('python')
    else:
        cmds = cmds.format('python3')
    call(cmds, shell=True)
install requirements.txt