def prod():
    env.environment = 'prod'
    env.branch = 'prod'
get the first item in dict,
dataset/ETHPy150Open agconti/cookiecutter-django-rest/{{cookiecutter.github_repository_name}}/fabfile.py/prod--crossover with--dataset/ETHPy150Open mission-liao/pyswagger/pyswagger/utils.py/get_dict_as_tuple