golden hour

/usr/lib/python3.9/site-packages/dns

File/Folder	Size	Actions
__init__.py	1.62 KB
__pycache__	-
_asyncbackend.py	2.3 KB
_asyncio_backend.py	8.76 KB
_ddr.py	5.12 KB
_features.py	2.33 KB
_immutable_ctx.py	2.4 KB
asyncbackend.py	2.73 KB
asyncquery.py	26.22 KB
asyncresolver.py	17.43 KB
dnssec.py	39.74 KB
dnssecalgs	-
dnssectypes.py	1.76 KB
e164.py	3.88 KB
edns.py	14.91 KB
entropy.py	4.14 KB
enum.py	3.6 KB
exception.py	5.82 KB
flags.py	2.69 KB
grange.py	2.1 KB
immutable.py	1.97 KB
inet.py	5.64 KB
ipv4.py	2.49 KB
ipv6.py	6.45 KB
message.py	64.45 KB
name.py	41.67 KB
namedict.py	3.91 KB
nameserver.py	9.68 KB
node.py	12.37 KB
opcode.py	2.67 KB
query.py	53.55 KB
quic	-
rcode.py	4.06 KB
rdata.py	28.77 KB
rdataclass.py	2.91 KB
rdataset.py	16.36 KB
rdatatype.py	7.17 KB
rdtypes	-
renderer.py	10.99 KB
resolver.py	71.83 KB
reversename.py	3.74 KB
rrset.py	8.96 KB
serial.py	3.52 KB
set.py	8.88 KB
tokenizer.py	23.03 KB
transaction.py	22.11 KB
tsig.py	11.15 KB
tsigkeyring.py	2.57 KB
ttl.py	2.91 KB
update.py	11.96 KB
version.py	1.88 KB
versioned.py	11.49 KB
win32util.py	8.89 KB
wire.py	2.76 KB
xfr.py	12.96 KB
zone.py	50.87 KB
zonefile.py	27.27 KB
zonetypes.py	690 B

Edit: immutable.py

# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license

import collections.abc
from typing import Any, Callable

from dns._immutable_ctx import immutable

@immutable
class Dict(collections.abc.Mapping):  # lgtm[py/missing-equals]
    def __init__(
        self,
        dictionary: Any,
        no_copy: bool = False,
        map_factory: Callable[[], collections.abc.MutableMapping] = dict,
    ):
        """Make an immutable dictionary from the specified dictionary.

If *no_copy* is `True`, then *dictionary* will be wrapped instead
        of copied.  Only set this if you are sure there will be no external
        references to the dictionary.
        """
        if no_copy and isinstance(dictionary, collections.abc.MutableMapping):
            self._odict = dictionary
        else:
            self._odict = map_factory()
            self._odict.update(dictionary)
        self._hash = None

def __getitem__(self, key):
        return self._odict.__getitem__(key)

def __hash__(self):  # pylint: disable=invalid-hash-returned
        if self._hash is None:
            h = 0
            for key in sorted(self._odict.keys()):
                h ^= hash(key)
            object.__setattr__(self, "_hash", h)
        # this does return an int, but pylint doesn't figure that out
        return self._hash

def __len__(self):
        return len(self._odict)

def __iter__(self):
        return iter(self._odict)

def constify(o: Any) -> Any:
    """
    Convert mutable types to immutable types.
    """
    if isinstance(o, bytearray):
        return bytes(o)
    if isinstance(o, tuple):
        try:
            hash(o)
            return o
        except Exception:
            return tuple(constify(elt) for elt in o)
    if isinstance(o, list):
        return tuple(constify(elt) for elt in o)
    if isinstance(o, dict):
        cdict = dict()
        for k, v in o.items():
            cdict[k] = constify(v)
        return Dict(cdict, True)
    return o