Data update

Task/Map-range/Python/map-range.py

@@ -0,0 +1,16 @@
+from fractions import Fraction
+
+def map_range(a, b, s):
+    (a1, a2), (b1, b2) = a, b
+    return b1 + ((s - a1) * (b2 - b1) / (a2 - a1))
+
+for s in range(11):
+    print(f"{s:2g} maps to {map_range((0, 10), (-1, 0), s):g}")
+
+print()
+
+# Because of Python's strict, dynamic typing rules for numbers, the same
+# function can give answers as fractions.
+
+for s in range(11):
+    print(f"{s:2g} maps to {map_range((0, 10), (-1, 0), Fraction(s))}")