purpose = "Fighting for a fairer world for human and non-human animals"

d = {
    "studies": {
        "graduating_in": ["Physics", "Data Science"]
    },
    "advocacy": purpose,
    "passions": ["Science", "Data"],
    "hobbies": ["Board games", "Challenges"],
    "code": ["Python", "JavaScript", "HTML", "R"],
    "tools": {
        "data": ["Power BI", "SQL", "Excel"],
        "cloud": ["AWS", "GCP"],
        "bioinformatics": ["PyMOL", "NAMD", "VMD", "Packmol", "LAMMPS"]
    },
    "specialties": ["Computational Biophysics", "Statistical Physics"]
}

message = (
    f"{d['advocacy']} through {', '.join(d['passions'])}, "
    f"using {', '.join(d['code'])}, and "
    f"{', '.join([tool for category in d['tools'].values() for tool in category])} "
    "to make a difference."
)

print(message)