Connexions / cnx-archive / 1914

95%

Pull #405

travis-ci

Add `__str__` for the Ident Hash exception classes

It used to not have any information other than the exception class when
the exception is raised, for example:

```
>>> raise IdentHashMissingVersion('8ac77e82-95d8-4a90-8b06-80a83bb8e636')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
cnxarchive.utils.ident_hash.IdentHashMissingVersion
>>> raise IdentHashShortId('12345678', 1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
cnxarchive.utils.ident_hash.IdentHashShortId
>>> raise IdentHashSyntaxError('a@')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
cnxarchive.utils.ident_hash.IdentHashSyntaxError
```

This commit changes it to:

```
>>> raise IdentHashMissingVersion('8ac77e82-95d8-4a90-8b06-80a83bb8e636')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
cnxarchive.utils.ident_hash.IdentHashMissingVersion: id=8ac77e82-95d8-4a90-8b06-80a83bb8e636
>>> raise IdentHashShortId('12345678', 1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
cnxarchive.utils.ident_hash.IdentHashShortId: id=12345678 version=1
>>> raise IdentHashSyntaxError('a@')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
cnxarchive.utils.ident_hash.IdentHashSyntaxError: ident_hash=a@
```

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