diff --git a/bubble_sort.py b/bubble_sort.py
new file mode 100644
index 0000000..c5c9e81
--- /dev/null
+++ b/bubble_sort.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+"""
+Simple bubble sort implementation in Python.
+"""
+
+
+def bubble_sort(arr):
+    """
+    Sort an array using the bubble sort algorithm.
+    
+    Args:
+        arr: List of comparable elements to sort
+        
+    Returns:
+        Sorted list (original array is modified in-place)
+    """
+    n = len(arr)
+    # Make a copy to avoid modifying the original
+    arr = arr.copy()
+    
+    # Traverse through all array elements
+    for i in range(n):
+        # Last i elements are already in place
+        for j in range(0, n - i - 1):
+            # Traverse the array from 0 to n-i-1
+            # Swap if the element found is greater than the next element
+            if arr[j] > arr[j + 1]:
+                arr[j], arr[j + 1] = arr[j + 1], arr[j]
+    
+    return arr
+
+
+if __name__ == "__main__":
+    # Example usage
+    test_array = [64, 34, 25, 12, 22, 11, 90]
+    print(f"Original array: {test_array}")
+    sorted_array = bubble_sort(test_array)
+    print(f"Sorted array: {sorted_array}")
+