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Author: StanFromIreland

Doc/library/codecs.rst

@@ -55,9 +55,9 @@ any codec:
 
 .. function:: charmap_build(string)
 
-   Return a mapping suitable for decoding a custom single-byte encoding.
-   Given a :class:`str` *string* of up to 256 characters representing an
-   encoding table, returns either a compact internal mapping object
+   Return a mapping suitable for encoding with a custom single-byte encoding.
+   Given a :class:`str` *string* of up to 256 characters representing a
+   decoding table, returns either a compact internal mapping object
    ``EncodingMap`` or a :class:`dictionary <dict>` mapping character ordinals
    to byte values. Raises a :exc:`TypeError` on invalid input.