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August 7, 2024 16:28
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| from pathlib import Path | |
| import csv | |
| # set MARVIN_OPENAI_API_KEY in your environment variables | |
| import marvin | |
| from pydantic import BaseModel | |
| import folium | |
| class Location(BaseModel): | |
| name: str | |
| latitude: float | |
| longitude: float | |
| cities = [ | |
| "Den Haag", | |
| "Berlin", | |
| "Hamburg", | |
| "Copenhagen", | |
| "Hamburg", | |
| "Cologne", | |
| "Brussels", | |
| "Heidelberg", | |
| "Strasbourg", | |
| "Paris", | |
| "Lyon", | |
| "Marseille", | |
| "Arles", | |
| "Tarascon", | |
| "Avignon", | |
| "Nîmes", | |
| "Aix-en-Provence", | |
| "Lille", | |
| "Calais", | |
| "Dover", | |
| "York", | |
| "Edinburgh", | |
| "Manchester", | |
| "Bath", | |
| "Bristol", | |
| "London", | |
| "Harwich", | |
| "Hoek van Holland", | |
| ] | |
| cities_cache = "cities.csv" | |
| def write_csv(data): | |
| with open(cities_cache, mode="w", newline="") as file: | |
| writer = csv.writer(file) | |
| writer.writerow(["Name", "Latitude", "Longitude"]) # Write the header | |
| for location in data: | |
| writer.writerow([location.name, location.latitude, location.longitude]) | |
| def get_locations(): | |
| with open(cities_cache, mode="r") as file: | |
| reader = csv.reader(file) | |
| next(reader) | |
| for row in reader: | |
| name, latitude, longitude = row | |
| yield Location( | |
| name=name, latitude=float(latitude), longitude=float(longitude) | |
| ) | |
| cities_cache = Path(cities_cache) | |
| if not cities_cache.exists(): | |
| print("Cache not found, fetching data") | |
| data = marvin.cast(cities, target=list[Location]) | |
| write_csv(data) | |
| mymap = folium.Map(location=(52.0, 5.0), zoom_start=5) | |
| for location in get_locations(): | |
| folium.Marker( | |
| location=[location.latitude, location.longitude], popup=location.name | |
| ).add_to(mymap) | |
| mymap.save("cities_map.html") |
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