diff --git a/solutions/python/grains/2/grains.py b/solutions/python/grains/2/grains.py
new file mode 100644
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+++ b/solutions/python/grains/2/grains.py
@@ -0,0 +1,34 @@
+"""Grains."""
+
+
+def square(number) -> int:
+    """
+    Calculate the number of grains on a given square.
+
+    One grain on the first square of a chessboard, with the number
+    of grains doubling on each successive square.
+
+    :param number: A chessboard square
+    :type number: int
+    :return: number of grains on a given square.
+    :rtype: int
+    """
+    if number <= 0 or number > 64:
+        raise ValueError("square must be between 1 and 64")
+
+    return 2 ** (number - 1)
+
+
+def total() -> int:
+    """
+    Calculate the total number of grains on the chessboard.
+
+    A chessboard has 64 squares. Square 1 has one grain,
+    square 2 has two grains, square 3 has four grains, and so on,
+    doubling each time.
+
+    :return: the total number of grains on the chessboard.
+    :rtype: int
+    """
+    # return sum(square(sqr) for sqr in range(1, 65))
+    return 2 ** 64 - 1