Like dict, only multi. Most of the normal dict methods are supported, plus:
get only returns one item; this method returns a list of all items for a given key.
If there are none, returns an empty list.
pop removes one item, this method removes all items. The return value is the same
as for getall.
Unlike dict.update, this method does not override old values; instead, both
the old values and the new values are stored in this dict.
This method is closer to dict.update; if a key occurs in init, the old
values for that key are removed.
A MultiDict that normalizes its keys (by making them lowercase.)
A list of (value, quality) pairs sorted in descending order by quality.
Unlike a normal list, it’s not indexed by integers; instead, accept !! smth
returns the quality assigned to smth, or 0 if there is none.
A simple container for files submitted through multipart/form-data.
The name of this file as specified in Content-Disposition. NOTE: it’s not safe
to use this name without normalizing it first, as it can contain path separators
and other unwanted stuff.
The contents of this file as a bytes object.