Remove Counter import, solve without modules

Author: sinemtanriver

Week03/sequences_sinem_tanriver.py

@@ -1,6 +1,3 @@
-from collections import Counter
-
-
 def remove_duplicates(seq: list) -> list:
     """
     This function removes duplicates from a list.
@@ -18,11 +15,14 @@ def list_counts(seq: list) -> dict:
     """
     This function counts the number of occurrences of each item in a list.
     """
-    return dict(Counter(seq))
+    counts = {}
+    for item in seq:
+        counts[item] = counts.get(item, 0) + 1
+    return counts
 
 
 def reverse_dict(d: dict) -> dict:
     """
     This function reverses the keys and values of a dictionary.
     """
-    return dict(zip(d.values(), d.keys()))
+    return {value: key for key, value in d.items()}