formatting for readability

midi.py

@@ -10,11 +10,13 @@ def __init__(self, callback):
         if not self.midi_in.get_ports():
             print('No midi devices found.')
             return
-        else:
-            print('detected midi devices:')
-            for x in self.midi_in.get_ports():
-                print(x)
-            self.midi_in.set_callback(callback)
-            self.midi_in.open_port(0) # open first device
 
+        print('detected midi devices:')
+        for ports in self.midi_in.get_ports():
+            print(ports)
 
+        # open first device by default
+        self.midi_in.set_callback(callback)
+        self.midi_in.open_port(0)
+
+        self.midi_opened = True

note.py

@@ -13,4 +13,4 @@ def get_note(self, freq):
             return self.note_letter + str(self.octave)
 
     def to_string(self):
-        return "{0:4} | {1:10} | {3:4}".format(self.get_note(False), round(self.frequency, 6), self.cents, self.midi_ID)
+        return "{0:4} | {1:10} | {3:4}".format(self.get_note(False), round(self.frequency, 4), self.cents, self.midi_ID)