The documentation found in https://docs.python.org/2/library/hashlib.html

give us the following example:

```
More condensed:

>>> hashlib.sha224("Nobody inspects the spammish repetition").hexdigest()
'a4337bc45a8fc544c03f52dc550cd6e1e87021bc896588bd79e901e2'
```

Although, we get the error if not encode the string:
```
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: Unicode-objects must be encoded before hashing
```

So the example should be (string to bytes):
`hashlib.sha224(b"Nobody inspects the spammish repetition").hexdigest()`

Hi Marcelo,

Thanks for the report.  The version of the documentation that you linked to is for Python 2.  At the top of that page, there is a redirect to the Python 3 documentation at https://docs.python.org/3/library/hashlib.html.  You'll see that the Python 3 documentation does use bytes for that example.

ooops, thank you!