Common data structures¶
Common data structures used by aiohttp internally.
FrozenList¶
A list-like structure which implements
collections.abc.MutableSequence
.
The list is mutable unless FrozenList.freeze()
is called,
after that the list modification raises RuntimeError
.
- class aiohttp.FrozenList(items)¶
Construct a new non-frozen list from items iterable.
The list implements all
collections.abc.MutableSequence
methods plus two additional APIs.- frozen¶
A read-only property,
True
is the list is frozen (modifications are forbidden).
- freeze()¶
Freeze the list. There is no way to thaw it back.
ChainMapProxy¶
An immutable version of collections.ChainMap
. Internally
the proxy is a list of mappings (dictionaries), if the requested key
is not present in the first mapping the second is looked up and so on.
The class supports collections.abc.Mapping
interface.