Trying to make installable package

EngieApi/DistributionCosts.py

@@ -0,0 +1,28 @@
+class Capaciteitstarief:
+    def __init__(self):
+        self.gemiddelde_maandpiek = 38.7570  # Eur / KW / jaar
+        self.kwh_tarief = 36.0218 / 1000  # EUR / kWh
+        self.databeheer = 13.71  # EUR / jaar
+
+    def calculate(self, peak: float, usage: float, days: int):
+        """calculate distribution cost
+
+        :param peak: gemiddelde peak over alle maanden
+        :type peak: float
+        :param usage: totaal aantal kWh verbruikt
+        :type usage: float
+        :param days: totaal aantal dagen verbruikt
+        :type days: int
+        """
+        peak = max(peak, 2.5)
+        return ((peak * self.gemiddelde_maandpiek) / 365 * days + usage * self.kwh_tarief + self.databeheer / 365 * days) * self.btw
+
+    def calculate_per_kwh(self, peak: float) -> tuple(float, float):
+        """calculate_per_kwh distribution cost
+
+        :param peak: gemiddelde peak over alle maanden
+        :type peak: float
+        :return: cost per kwh and yearly costs
+        """
+        return self.kwh_tarief, self.databeheer + self.gemiddelde_maandpiek * peak
+