diff --git a/app/__pycache__/main.cpython-312.pyc b/app/__pycache__/main.cpython-312.pyc
new file mode 100644
index 00000000..c3c41c55
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diff --git a/app/main.py b/app/main.py
index f07695b9..328355fe 100644
--- a/app/main.py
+++ b/app/main.py
@@ -16,4 +16,13 @@
 }
 collection_of_coins = {1, 2, 25}
 
-# write your code here
+def sort_variables_by_mutability():
+    mutable_variables = [my_favourite_films, marks, collection_of_coins]  # Lists, dictionaries, and sets are mutable
+    immutable_variables = [lucky_number, pi, one_is_a_prime_number, name,
+                           profile_info]  # Integers, floats, booleans, strings, and tuples are immutable
+
+    return {"mutable": mutable_variables, "immutable": immutable_variables}
+
+
+sorted_variables = sort_variables_by_mutability()
+print(sorted_variables)
diff --git a/tests/__pycache__/__init__.cpython-312.pyc b/tests/__pycache__/__init__.cpython-312.pyc
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diff --git a/tests/__pycache__/test_main.cpython-312-pytest-7.1.3.pyc b/tests/__pycache__/test_main.cpython-312-pytest-7.1.3.pyc
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