I am using `voluptuous` a lot to validate yaml description files. Often the errors are cumbersome to decipher, especially for regular users.

I am looking for a way to make the error a bit more readable. One way is to identify which line in the YAML file is incrimined.

```
from voluptuous import Schema 
import yaml 
from io import StringIO

Validate = Schema({
    'name': str,
    'age': int,
})

data = """
name: John
age: oops
"""

data = Validate(yaml.load(StringIO(data)))

```

In the above example, I get this error:

```
MultipleInvalid: expected int for dictionary value @ data['age']

```

I would rather prefer an error like:

```
Error: validation failed on line 2, data.age should be an integer.

```

Is there an elegant way to achieve this?