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2024_05_31_DataStructures/planet_conditional.py

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+import math
+
+def main():
+  MERCURY_GRAVITY = (37.6 / 100)
+  VENUS_GRAVITY = (88.9 / 100)
+  MARS_GRAVITY = (37.8 / 100)
+  JUPITER_GRAVITY = (236 / 100)
+  SATURN_GRAVITY = (108.1 / 100)
+  URANUS_GRAVITY = (81.5 / 100)
+  NEPTUNE_GRAVITY = (114 / 100)    
+
+  earthWeight = float(input("Enter the object weight: "))
+  planetName = input("Enter a planet name: ")
+
+  match planetName:
+    case "Mercury":
+        planetWeight = float(earthWeight) * MERCURY_GRAVITY
+
+    case "Venus":
+        planetWeight = float(earthWeight) * VENUS_GRAVITY
+
+    case "Mars":
+        planetWeight = float(earthWeight) * MARS_GRAVITY
+
+    case "Jupiter":
+        planetWeight = float(earthWeight) * JUPITER_GRAVITY
+
+    case "Saturn":
+        planetWeight = float(earthWeight) * SATURN_GRAVITY
+
+    case "Uranus":
+        planetWeight = float(earthWeight) * URANUS_GRAVITY
+
+    case "Neptune":
+        planetWeight = float(earthWeight) * NEPTUNE_GRAVITY
+
+    case "Earth":
+        planetWeight = float(earthWeight)
+
+    case other:
+        planetWeight = -1.0 # Why put a negative value here?
+
+  print("The name of the planet: " + planetName + " with weight: " + str(planetWeight))
+
+if __name__ == '__main__':
+    main()

2024_05_31_DataStructures/planet_dictionary.py

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+planet_dict = [
+    {"mercury": 0.376}, 
+    {"venus": 0.889}, 
+    {"mars": 0.378}, 
+    {"jupiter": 2.36}, 
+    {"saturn": 1.081}, 
+    {"uranus": 0.815}, 
+    {"neptune": 1.14}
+]
+
+def calculate_weight(target_planet, earth_weight):
+    # TODO: Check the earth weight, make sure >= 0 and numbers only
+    # TODO: Check that the target planet name is listed in the dictionary, otherwise return an error
+
+    planet_name = target_planet.lower()
+    planet_constant = -1.0
+    for i in range( len(planet_dict) ):
+        for name, gravity in planet_dict[i].items():
+            if (planet_name == name):
+                planet_constant = gravity
+            else:
+                return -1.0
+    planet_weight = planet_constant * earth_weight
+
+    return planet_weight
+
+def main():
+  earth_weight = float(input("Enter the object weight: "))
+  planet_name = input("Enter a planet name: ")
+
+  planet_weight = calculate_weight(planet_name, earth_weight)
+
+  print("The name of the planet: " + planet_name + " with weight: " + str(planet_weight))
+
+if __name__ == '__main__':
+    main()