diff --git a/solutions/python/armstrong-numbers/2/armstrong_numbers.py b/solutions/python/armstrong-numbers/2/armstrong_numbers.py
new file mode 100644
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+++ b/solutions/python/armstrong-numbers/2/armstrong_numbers.py
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+"""Armstrong Numbers."""
+
+
+def is_armstrong_number(number: int) -> bool:
+    """
+    Test if "Armstrong Number".
+
+    An Armstrong number is a number that is the sum of its own digits
+    each raised to the power of the number of digits.
+
+    :param number: any integer number
+    :type number: int
+    :return: if "Armstrong Number"
+    :rtype: bool
+
+    Examples:
+    >>> is_armstrong_number(153)
+    True
+    >>> is_armstrong_number(10)
+    False
+    """
+    if number < 0:
+        raise ValueError("Only non-negative integers are allowed")
+
+    str_num: str = str(number)
+    n: int = len(str_num)
+    return number == sum(int(char) ** n for char in str_num)