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import requests
UA = {"User-Agent": "HF-Space-Trip-Planner/1.0 (contact: example@example.com)"}
def geocode_city(city: str):
url = "https://nominatim.openstreetmap.org/search"
params = {"q": city, "format": "json", "limit": 1}
try:
r = requests.get(url, params=params, headers=UA, timeout=20)
r.raise_for_status()
data = r.json()
if not data:
return None
j = data[0]
return {"lat": float(j["lat"]), "lon": float(j["lon"])}
except Exception:
return None
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