example 5

sources/05-airports.py

@@ -1,11 +1,31 @@
-airports = {
-    "ORY": "Orly",
-    "LAX": "Los Angeles",
-}
-
-print("Where are you going?")
-a = input().upper()
-if a in airports:
-    print(airports[a])
-else:
-    print(a, "not found")
+import sys
+
+
+def build_airport_dict():
+    result = dict()
+    stream = open("airports.txt", "r")
+    contents = stream.read()
+    lines = contents.splitlines()
+    for line in lines:
+        words = line.split(" ", maxsplit=1)
+        assert len(words) == 2
+        code = words[0]
+        name = words[1].strip()
+        result[code] = name
+    return result
+
+
+def main():
+    if len(sys.argv) < 2:
+        sys.exit("Not enough arguments")
+
+    airport_dict = build_airport_dict()
+    code = sys.argv[1]
+    if code not in airport_dict:
+        sys.exit("Code not found")
+    result = airport_dict[code]
+    print(result)
+
+
+if __name__ == "__main__":
+    main()

sources/airports.txt

@@ -0,0 +1,44 @@
+CDG Paris-Charles de Gaulle
+ORY Paris-Orly
+NCE Nice-Côte d'Azur
+LYS Lyon-Saint-Exupéry
+TLS Toulouse-Blagnac
+MRS Marseille-Provence
+BSL Bâle-Mulhouse-Fribourg
+BOD Bordeaux-Mérignac
+NTE Nantes-Atlantique
+BVA Paris-Beauvais-Tillé
+PTP Guadeloupe - Pôle Caraïbes
+RUN La Réunion-R. Garros
+FDF Martinique Aimé Césaire
+LIL Lille Lesquin
+MPL Montpellier-Méditerranée
+AJA Ajaccio
+BIA Bastia-Poretta
+PPT Tahiti-Faaa
+SXB Strasbourg
+BIQ Biarritz-Pays Basque
+BES Brest-Bretagne
+FSC Figari Sud Corse
+RNS Rennes-St-Jacques
+PUF Pau-Pyrénées
+NOU Nouméa - La Tontouta
+CAY Cayenne-F. Éboué
+TLN Toulon-Hyères
+LDE Tarbes-Lourdes-Pyrénées
+GEA Nouméa Magenta
+PGF Perpignan
+CCF Carcassonne
+CFE Clermont-Ferrand
+DZA Dzaoudzi-Pamandzi
+GNB Grenoble-Alpes-Isère
+CLY Calvi Sainte-Catherine
+EGC Bergerac-Dordogne-Périgord
+LIG Limoges-Bellegarde
+BOB Bora-Bora
+ETZ Metz-Nancy-Lorraine
+RFP Raiatea
+BZR Béziers - Cap d'Agde
+SFG Saint-Martin Grand-Case
+LRH La Rochelle-Île de Ré
+FNI Nîmes-Garons