first commit

helix/constants/inverter_brand.py

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+from enum import IntEnum
+
+
+class InverterBrand(IntEnum):
+    SMA = 1
+    DELTA = 2
+
+    @property
+    def label(self):
+        return {
+            self.SMA: 'SMA',
+            self.DELTA: 'Delta',
+        }[self]
+
+    @classmethod
+    def default_value(cls):
+        return cls.SMA.value
+
+    @classmethod
+    def all(cls):
+        return [cls.SMA, cls.DELTA]
+
+    @classmethod
+    def dict(cls):
+        return {cls.SMA.label: cls.SMA.value, cls.DELTA.label: cls.DELTA.value}