updated chapter 4 and appendix-A files

04-text-byte/skin.py

@@ -0,0 +1,12 @@
+from unicodedata import name
+
+SKIN1 = 0x1F3FB  # EMOJI MODIFIER FITZPATRICK TYPE-1-2  # <1>
+SKINS = [chr(i) for i in range(SKIN1, SKIN1 + 5)]       # <2>
+THUMB = '\U0001F44d'  # THUMBS UP SIGN 👍
+
+examples = [THUMB]                                      # <3>
+examples.extend(THUMB + skin for skin in SKINS)         # <4>
+
+for example in examples:
+    print(example, end='\t')                            # <5>
+    print(' + '.join(name(char) for char in example))   # <6>