get(key, default=None, type=None, as_bytes=False)¶
Return the default value if the requested data doesn’t exist. If type is provided and is a callable it should convert the value, return it or raise a
ValueErrorif that is not possible. In this case the function will return the default as if the value was not found:
>>> d = Headers([('Content-Length', '42')]) >>> d.get('Content-Length', type=int) 42
If a headers object is bound you must not add unicode strings because no encoding takes place.
New in version 0.9: Added support for as_bytes.
- key – The key to be looked up.
- default – The default value to be returned if the key can’t be looked up. If not further specified None is returned.
- type – A callable that is used to cast the value in the
Headers. If a
ValueErroris raised by this callable the default value is returned.
- as_bytes – return bytes instead of unicode strings.