[py] minor, comment buffer_add_utf8 call

mainly to apply lgtm suggestion, looks better also however,
some minor spacing is also applied.

src/sample.py

diff --git a/src/sample.py b/src/sample.py
index 889efec..fd85048 100755
--- a/src/sample.py
+++ b/src/sample.py
@@ -20,11 +20,11 @@
 hb.ot_font_set_funcs (font)
 
 buf = hb.buffer_create ()
-class Debugger(object):
+class Debugger (object):
 	def message (self, buf, font, msg, data, _x_what_is_this):
-		print(msg)
+		print (msg)
 		return True
-debugger = Debugger()
+debugger = Debugger ()
 hb.buffer_set_message_func (buf, debugger.message, 1, 0)
 
 ##
@@ -33,17 +33,16 @@
 #
 # See https://github.com/harfbuzz/harfbuzz/pull/271
 #
-if False:
-	# If you do not care about cluster values reflecting Python
-	# string indices, then this is quickest way to add text to
-	# buffer:
-	hb.buffer_add_utf8 (buf, text.encode('utf-8'), 0, -1)
-	# Otherwise, then following handles both narrow and wide
-	# Python builds (the first item in the array is BOM, so we skip it):
-elif sys.maxunicode == 0x10FFFF:
-	hb.buffer_add_utf32 (buf, array.array('I', text.encode('utf-32'))[1:], 0, -1)
+# If you do not care about cluster values reflecting Python
+# string indices, then this is quickest way to add text to
+# buffer:
+# hb.buffer_add_utf8 (buf, text.encode('utf-8'), 0, -1)
+# Otherwise, then following handles both narrow and wide
+# Python builds (the first item in the array is BOM, so we skip it):
+if sys.maxunicode == 0x10FFFF:
+	hb.buffer_add_utf32 (buf, array.array ('I', text.encode ('utf-32'))[1:], 0, -1)
 else:
-	hb.buffer_add_utf16 (buf, array.array('H', text.encode('utf-16'))[1:], 0, -1)
+	hb.buffer_add_utf16 (buf, array.array ('H', text.encode ('utf-16'))[1:], 0, -1)
 
 
 hb.buffer_guess_segment_properties (buf)
@@ -54,11 +53,11 @@
 infos = hb.buffer_get_glyph_infos (buf)
 positions = hb.buffer_get_glyph_positions (buf)
 
-for info,pos in zip(infos, positions):
+for info, pos in zip (infos, positions):
 	gid = info.codepoint
 	cluster = info.cluster
 	x_advance = pos.x_advance
 	x_offset = pos.x_offset
 	y_offset = pos.y_offset
 
-	print("gid%d=%d@%d,%d+%d" % (gid, cluster, x_advance, x_offset, y_offset))
+	print ("gid%d=%d@%d,%d+%d" % (gid, cluster, x_advance, x_offset, y_offset))