diff --git a/solutions/python/resistor-color/1/resistor_color.py b/solutions/python/resistor-color/1/resistor_color.py
new file mode 100644
index 0000000..41fa94e
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+++ b/solutions/python/resistor-color/1/resistor_color.py
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+"""
+Utilities for working with the 10-color resistor code.
+
+Mnemonics map the colors to the numbers, that, when stored
+as an array, happen to map to their index in the array:
+Better Be Right Or Your Great Big Values Go Wrong.
+"""
+
+COLORS: tuple = (
+    "black",
+    "brown",
+    "red",
+    "orange",
+    "yellow",
+    "green",
+    "blue",
+    "violet",
+    "grey",
+    "white",
+)
+
+
+def color_code(color: str) -> int:
+    """
+    Return the numeric code (0-9) for a resistor color.
+
+    :param color: Color name.
+    :type color: str
+    :returns: Index in the standard 10-color sequence
+              (0 for 'black' through 9 for 'white').
+    :rtype: int
+    :raises ValueError: If color is not a valid resistor color.
+    """
+    return COLORS.index(color)
+
+
+def colors() -> list:
+    """
+    Return all valid resistor colors in ascending code order.
+
+    :returns: List of color names in order from 'black' (0) to 'white' (9).
+    :rtype: list
+    """
+    return list(COLORS)