@@ -0,0 +1,26 @@
+def remove_duplicates(seq: list) -> list:
+    """
+    This function removes duplicates from a list.
+    """
+    return list(dict.fromkeys(seq))
+
+def list_counts(seq: list) -> dict:
+    """
+    This function counts the number of occurrences of each item in a list.
+    """
+    counts = {}
+    for item in seq:
+        if item in counts:
+            counts[item] =counts[item]+1
+        else:
+            counts[item]=1
+    return counts
+
+def reverse_dict(d: dict) -> dict:
+    """
+    This function reverses the keys and values of a dictionary.
+    """
+    result = {}
+    for k ,v in d.items():
+        result[v]=k
+    return result