first commit

Ugesedler/Ugeseddel-6 08-10-2025/zip_lookup_skeleton.py

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+import math
+
+RADIUS = 3956.6
+
+def give_intro():
+    pass
+
+def find(file, target_zip):
+    for line in file:
+        zip, lat, lng, city = line.rstrip().split(" : ")
+        if zip == target_zip:
+            print(zip + ":", city)
+            return float(lat), float(lng)
+    return 0, 0
+
+def show_matches(file, lat1, lng1, miles):
+    pass
+
+def distance(lat1, lng1, lat2, lng2):
+    lat1 = math.radians(lat1)
+    lng1 = math.radians(lng1)
+    lat2 = math.radians(lat2)
+    lng2 = math.radians(lng2)
+    the_cos = math.sin(lat1) * math.sin(lat2) \
+        + math.cos(lat1)  * math.cos(lat2) * math.cos(lng1 - lng2)
+    arc_length = math.acos(the_cos)
+    return arc_length * RADIUS
+
+def main():
+    give_intro()
+    zip = input("What zip code are you interested in? ")
+    miles = float(input("And what proximity (in miles)? "))
+    print()
+    with open("zipcode.txt") as file:
+        lat, lng = find(file, zip)
+        file.seek(0)
+        show_matches(file, lat, lng, miles)
+
+main()