diff --git a/src/Python/003.py b/src/Python/003.py
new file mode 100644
index 0000000..0ca04a0
--- /dev/null
+++ b/src/Python/003.py
@@ -0,0 +1,11 @@
+ORDER = ("R", "A", "M")
+
+def tricolor_flag(lst: list) -> list:
+    order: dict[str, int] = {value: idx for idx, value in enumerate(ORDER)}
+    return sorted(lst, key=order.__getitem__)
+
+check = ["M","R","A","A","R","R","A","M","M"]
+print(tricolor_flag(check))  # [R,R,R,A,A,A,M,M,M]
+
+check = ["M", "R", "A", "R", "R", "A"]
+print(tricolor_flag(check))  # [R,R,R,A,A,M]
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