New issue 3006: codecs.decode failure: 'hex' decoder returned 'bytes' instead
of 'str'
https://bitbucket.org/pypy/pypy/issues/3006/codecsdecode-failure-hex-decoder-returned
vados:
PyPy:
```python
Python 3.6.1 (de061d87e39c7df4e436974096d7982c676a859d, Mar 26 2019, 16:19:11)
[PyPy 7.1.0-beta0 with GCC 8.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
And now for something completely different: ``PyPy is a tool to keep otherwise
dangerous minds safely occupied.''
>>>> import codecs; codecs.decode("707974686f6e2d666f72756d2e696f", "hex")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'hex' decoder returned 'bytes' instead of 'str'; use codecs.decode()
to decode to arbitrary types
```
In Python:
```python
Python 3.7.3 (default, Mar 26 2019, 21:43:19)
[GCC 8.2.1 20181127] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import codecs; codecs.decode("707974686f6e2d666f72756d2e696f", "hex")
b'python-forum.io'
```
This was discovered deep [in some code that powers ethereum for
python](https://github.com/ethereum/eth-utils/blob/master/eth_utils/hexadecimal.py#L17)
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