A List of Dictionaries

flights = [
    {"name": "Mercury-Redstone 3", "altitude_km": 187.0, "duration_min": 15.0},
    {"name": "Vostok 1", "altitude_km": 327.0, "duration_min": 108.0},
    {"name": "Freedom 7", "altitude_km": 187.0, "duration_min": 15.0},
]

print(len(flights))
print(flights[0])
print(flights[0]["name"])
print(flights[1]["altitude_km"])

3
{'name': 'Mercury-Redstone 3', 'altitude_km': 187.0, 'duration_min': 15.0}
Mercury-Redstone 3
327.0