updated from Atlas

attic/strings-bytes/encodings_demo.py

@@ -0,0 +1,54 @@
+import unicodedata
+
+encodings = 'ascii latin1 cp1252 cp437 gb2312 utf-8 utf-16le'.split()
+
+widths = {encoding:1 for encoding in encodings[:-3]}
+widths.update(zip(encodings[-3:], (2, 4, 4)))
+
+chars = sorted([
+    'A',  # \u0041 : LATIN CAPITAL LETTER A
+    '¿',  # \u00bf : INVERTED QUESTION MARK
+    'Ã',  # \u00c3 : LATIN CAPITAL LETTER A WITH TILDE
+    'á',  # \u00e1 : LATIN SMALL LETTER A WITH ACUTE
+    'Ω',  # \u03a9 : GREEK CAPITAL LETTER OMEGA
+    'µ',
+    'Ц',
+    '€',  # \u20ac : EURO SIGN
+    '“',
+    '┌',
+    '气',
+    '氣', # \u6c23 : CJK UNIFIED IDEOGRAPH-6C23
+    '𝄞',  # \u1d11e : MUSICAL SYMBOL G CLEF
+])
+
+callout1_code = 0x278a  # ➊   DINGBAT NEGATIVE CIRCLED SANS-SERIF DIGIT ONE
+
+missing_mark = '*'
+
+def list_chars():
+    for char in chars:
+        print('%r,  # \\u%04x : %s' % (char, ord(char), unicodedata.name(char)))
+
+def show_encodings():
+    print(end='\t\t')
+    for encoding in encodings:
+        print(encoding.ljust(widths[encoding] * 2), end='\t')
+    print()
+
+    for lineno, char in enumerate(chars):
+        codepoint = 'U+{:04X}'.format(ord(char))
+        print(char, codepoint, sep='\t', end='\t')
+        for encoding in encodings:
+            try:
+                bytes = char.encode(encoding)
+                dump = ' '.join('%02X' % byte for byte in bytes)
+            except UnicodeEncodeError:
+                dump = missing_mark
+            dump = dump.ljust(widths[encoding] * 2)
+            print(dump, end='\t')
+        # print(chr(callout1_code + lineno))
+        print(unicodedata.name(char))
+        # print()
+
+#list_chars()
+show_encodings()