logger.py

import csv
import time

FILE = "mission.csv"

def log(entity, pose, mag):
    with open(FILE, "a", newline="") as f:
        writer = csv.writer(f)
        writer.writerow([
            time.time(), entity,
            pose.get("x"), pose.get("y"), pose.get("z", 0),
            mag["Bx"], mag["By"], mag["Bz"]
        ])