Python Fundamentals - Final Exam Retake.

Problem: n°3.

Author: vncmd

[2.2] Fundamentals Exam - Exercises/[1.4] Final Exam - Retake/02_the_pianist.py

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+num_of_pieces = int(input())
+pieces = []
+composers = []
+keys = []
+
+for el in range(num_of_pieces):
+    current_piece = input()
+
+    piece, composer, key = current_piece.split("|")
+    pieces.append(piece)
+    composers.append(composer)
+    keys.append(key)
+
+command = input()
+while command != "Stop":
+    current_command = command.split("|")
+    action = current_command[0]
+
+    if action == "Add":
+        piece, composer, key = current_command[1], current_command[2], current_command[3]
+        if piece in pieces:
+            print(f"{piece} is already in the collection!")
+        else:
+            print(f"{piece} by {composer} in {key} added to the collection!")
+            pieces.append(piece)
+            composers.append(composer)
+            keys.append(key)
+
+    elif action == "Remove":
+        piece = current_command[1]
+
+        if piece in pieces:
+            piece_idx = pieces.index(piece)
+            pieces.pop(piece_idx)
+            composers.pop(piece_idx)
+            keys.pop(piece_idx)
+
+            print(f"Successfully removed {piece}!")
+
+        else:
+            print(f"Invalid operation! {piece} does not exist in the collection.")
+
+    elif action == "ChangeKey":
+        piece, new_key = current_command[1], current_command[2]
+
+        if piece in pieces:
+            piece_idx = pieces.index(piece)
+            keys[piece_idx] = new_key
+
+            print(f"Changed the key of {piece} to {new_key}!")
+
+        else:
+            print(f"Invalid operation! {piece} does not exist in the collection.")
+
+    command = input()
+
+for idx in range(len(pieces)):
+    current_piece = pieces[idx]
+    current_composer = composers[idx]
+    current_key = keys[idx]
+
+    print(f"{current_piece} -> Composer: {current_composer}, Key: {current_key}")