GIAT convert_mass example from class

README.md

@@ -30,3 +30,4 @@ $ pip install -e .
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+- Find the refactoring Give It A Try in `files/convert_mass.py`

files/convert_mass.py

@@ -0,0 +1,27 @@
+'''  Refactor the following code
+mass_oz = [0.5, 0.6, 1.2, 3.4]
+mass_g = [mass * 28.3496 for mass in mass_oz]
+mass_kg = [mass * 28.3496 / 1000 for mass in mass_oz]
+'''
+
+# Refactor Step 1
+G_OZ = 28.3496
+KG_OZ = G_OZ / 1000
+
+mass_oz = [0.5, 0.6, 1.2, 3.4]
+mass_g = [mass * G_OZ for mass in mass_oz]
+mass_kg = [mass * KG_OZ for mass in mass_oz]
+
+# Refactor Step 2
+def convert_mass(mass_oz, conv_factor):
+    return [m * conv_factor for m in mass_oz]
+
+# Refactor Step 3
+if __name__ == "__main__":
+    mass_oz = [0.5, 0.6, 1.2, 3.4, 5.6, 7.8, 9.1]
+    print("Ounces")
+    print(", ".join(str(m) for m in mass_oz))
+    print("Grams")
+    print(", ".join(str(m) for m in convert_mass(mass_oz, G_OZ)))
+    print("Kilograms")
+    print(", ".join(str(m) for m in convert_mass(mass_oz, KG_OZ)))

src/fancymath/math.py

@@ -13,3 +13,10 @@ def fact(n: int) -> int:
         return 1
     else:
         return n * fact(n - 1)
+
+
+if __name__ == '__main__':
+    n = 5
+    assert fact(n) == 120
+    assert add(5, 6) == 11
+    print("Tests passed")