Review comments

- Indentation issues
- Inconsistencies

ch-13/3.4-movement-uncertainty/display_from_robot.py

@@ -20,7 +20,7 @@ class RobotDisplay:
         self.closed = True
 
     def handle_data(self, data):
-        self.buffer += data.decode)
+        self.buffer += data.decode()
         while "\n" in self.buffer:
             line, self.buffer = self.buffer.split("\n", 1)
             print(f"Received data: {line}")

ch-13/3.4-movement-uncertainty/robot/code.py

@@ -49,12 +49,12 @@ def send_json(data):
 
 def read_json():
     try:
-      data = robot.uart.readline()
-      decoded = data.decode()
-      return json.loads(decoded)
+        data = robot.uart.readline()
+        decoded = data.decode()
+        return json.loads(decoded)
     except (UnicodeError, ValueError):
-      print("Invalid data")
-      return None
+        print("Invalid data")
+        return None
 
 
 def send_poses(samples):