Fixed missing code from removing abstraction

src/handler/dht22_climate.py

@@ -1,11 +1,17 @@
 import Adafruit_DHT
 
 
-class Dht22Climate():
-    def __init__(self, pin):
-        super().__init__()
+class Dht22Climate:
+
+    def __init__(self, pin: int):
         self.sensor = Adafruit_DHT.AM2302
         self.pin = pin
+        self.last_read = None
+
+    def get_last_read(self):
+        if self.last_read is None:
+            return self.read()
+        return self.last_read
 
     def read(self):
         humidity, temperature = Adafruit_DHT.read_retry(self.sensor, self.pin)