def bin_folder(ve):

    return os.path.join(ve, 'bin')
This method retrieves all the root tiers.
dataset/ETHPy150Open thisismedium/virtualenv-commands/vecmd/commands.py/bin_folder--crossover with--dataset/ETHPy150Open cidles/poio-api/src/poioapi/io/odin.py/Parser.get_root_tiers