Gestione delle liste

listdata/main.py

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+from collections import Counter
+
+
+def main():
+    # Tuple
+    vowels = ('a', 'e', 'i', 'o', 'u')
+
+    word = 'Supercalifragilisticexpialidocious'
+
+    # Loop over string
+    for letter in word:
+        if letter in vowels:
+            print(letter)
+
+    # Count vowels in a word
+    vowels_in_word = [letter for letter in word.lower() if letter in vowels]
+    print(Counter(vowels_in_word), '\n')
+
+    # List share reference between first and second
+    first = [1, 2, 3, 4, 5]
+    print(f"{first=} (initial)")
+    second = first
+    print(f"{second=} (initial)")
+
+    second.append(6)
+    print(f"{second=} (post append)")
+    print(f"{first=} (post append)")
+
+    # If you want create a list's copy you must to use copy method
+    print("Third is a copy of second")
+    third = second.copy()
+    print(f"{third=} (pre append)")
+
+    third.append(7)
+    print(f"{third=} (post append)")
+    print(f"{second=} (post append)")
+
+
+if __name__ == '__main__':
+    main()