In the Unicode HOTWO documentation for Python 2.x [0], there's an error in the fourth code sample under the section "The Unicode Type".

The code states:

```
>>> s = u'Was ever feather so lightly blown to and fro as this multitude?'
>>> s.count('e')
5
>>> s.find('feather')
9
>>> s.find('bird')
-1
>>> s.replace('feather', 'sand')
u'Was ever sand so lightly blown to and fro as this multitude?'
>>> s.upper()
u'WAS EVER FEATHER SO LIGHTLY BLOWN TO AND FRO AS THIS MULTITUDE?'
```

Notice that in the last line, "sand" was turned back into "feather". The correct last line should have been:

```
u'WAS EVER SAND SO LIGHTLY BLOWN TO AND FRO AS THIS MULTITUDE?'
```

[0] https://docs.python.org/2/howto/unicode.html

The example is correct. If you type it into a python interpreter, you get the results as shown in the example.

The .replace() method does not modify the string s. It returns the new value. In the example, the new value is displayed, but is not assigned back to s, so s does not change.