import json

with open('/Users/treyt/desktop/code/werkout/werkout_files/exercises.json') as fp:
    muscle_groups = []
    data = json.load(fp)
    for item in data:
        if "muscle_groups" in item:
            _muscle_groups = item["muscle_groups"].split(",")
            for muscle in _muscle_groups:
                if muscle not in muscle_groups:
                    muscle_groups.append(muscle)
    print(muscle_groups)
    muscle_groups_dict = []
    for muscle in muscle_groups:
        _muscle_dict = {"name":muscle}
        muscle_groups_dict.append(_muscle_dict)
    print(muscle_groups_dict)
    # with open('/Users/treyt/desktop/code/werkout/werkout_files/muscles.json') as fp:
    #     json.dump(muscle_groups_dict, fp)