python: add music browser experiment

python/README.md

@@ -50,6 +50,14 @@ Here we go, a sound browser!
 - `button_b` scrolls right
 - `pin_logo` replays the current sound
 
+### [Browse All Music](./src/browse-all-music.py)
+
+Here we go, a music browser!
+
+- `button_a` scrolls left
+- `button_b` scrolls right
+- `pin_logo` replays the current sound
+
 ### [Press a Button](./src/press-a-button.py)
 
 The buttons `button_a` and `button_b` have 3 methods:

python/src/browse-all-music.py

@@ -0,0 +1,38 @@
+# Imports go at the top
+import music as Music
+from microbit import *
+
+songs: "list[str]" = [music for music in dir(Music) if music.isupper()]
+index: int = -1
+COUNT: int = len(songs)
+
+
+def browse_left(index: int) -> int:
+    return (index - 1) % COUNT
+
+
+def browse_right(index: int) -> int:
+    return (index + 1) % COUNT
+
+
+# Code in a 'while True:' loop repeats forever
+while True:
+    if button_a.was_pressed():
+        index = browse_left(index)
+    elif button_b.was_pressed():
+        index = browse_right(index)
+    elif pin_logo.is_touched():
+        print("INFO: not doing anything since the last song is already in a loop")
+
+    song: str
+
+    if index == -1:
+        song = "BA_DING"
+    else:
+        song = songs[index]
+
+    print("INFO: song: " + song)
+    display.scroll(song)
+    Music.play(getattr(Music, song))
+
+    sleep(1000)