test: use built-in collection types for type hints (Python 3.9 / PEP 585)

Since Python 3.9, type hinting has become a little less awkward, as for
collection types one doesn't need to import the corresponding
capitalized types (`Dict`, `List`, `Set`, `Tuple`, ...) anymore, but can
use the built-in types directly. [1] [2]
This commit applies the replacement for all Python scripts (i.e. in the
contrib and test folders) for the basic types:
    - typing.Dict  -> dict
    - typing.List  -> list
    - typing.Set   -> set
    - typing.Tuple -> tuple

[1] https://docs.python.org/3.9/whatsnew/3.9.html#type-hinting-generics-in-standard-collections
[2] https://peps.python.org/pep-0585/#implementation for a list of type

test/functional/interface_rest.py

@@ -65,7 +65,7 @@ class RESTTest (BitcoinTestFramework):
             body: str = '',
             status: int = 200,
             ret_type: RetType = RetType.JSON,
-            query_params: Optional[typing.Dict[str, typing.Any]] = None,
+            query_params: Optional[dict[str, typing.Any]] = None,
             ) -> typing.Union[http.client.HTTPResponse, bytes, str, None]:
         rest_uri = '/rest' + uri
         if req_type in ReqType:

test/functional/test_framework/script.py

@@ -10,7 +10,6 @@ This file is modified from python-bitcoinlib.
 from collections import namedtuple
 import struct
 import unittest
-from typing import List, Dict
 
 from .key import TaggedHash, tweak_add_pubkey, compute_xonly_pubkey
 
@@ -110,8 +109,8 @@ class CScriptOp(int):
             _opcode_instances.append(super().__new__(cls, n))
             return _opcode_instances[n]
 
-OPCODE_NAMES: Dict[CScriptOp, str] = {}
-_opcode_instances: List[CScriptOp] = []
+OPCODE_NAMES: dict[CScriptOp, str] = {}
+_opcode_instances: list[CScriptOp] = []
 
 # Populate opcode instance table
 for n in range(0xff + 1):

test/functional/test_framework/test_framework.py

@@ -19,7 +19,6 @@ import sys
 import tempfile
 import time
 
-from typing import List
 from .address import create_deterministic_address_bcrt1_p2tr_op_true
 from .authproxy import JSONRPCException
 from . import coverage
@@ -96,7 +95,7 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
         """Sets test framework defaults. Do not override this method. Instead, override the set_test_params() method"""
         self.chain: str = 'regtest'
         self.setup_clean_chain: bool = False
-        self.nodes: List[TestNode] = []
+        self.nodes: list[TestNode] = []
         self.extra_args = None
         self.network_thread = None
         self.rpc_timeout = 60  # Wait for up to 60 seconds for the RPC server to respond

test/functional/test_framework/util.py

@@ -20,7 +20,7 @@ import time
 
 from . import coverage
 from .authproxy import AuthServiceProxy, JSONRPCException
-from typing import Callable, Optional, Tuple
+from typing import Callable, Optional
 
 logger = logging.getLogger("TestFramework.utils")
 
@@ -416,7 +416,7 @@ def get_datadir_path(dirname, n):
     return pathlib.Path(dirname) / f"node{n}"
 
 
-def get_temp_default_datadir(temp_dir: pathlib.Path) -> Tuple[dict, pathlib.Path]:
+def get_temp_default_datadir(temp_dir: pathlib.Path) -> tuple[dict, pathlib.Path]:
     """Return os-specific environment variables that can be set to make the
     GetDefaultDataDir() function return a datadir path under the provided
     temp_dir, as well as the complete path it would return."""

test/functional/test_framework/wallet.py

@@ -9,7 +9,6 @@ from decimal import Decimal
 from enum import Enum
 from typing import (
     Any,
-    List,
     Optional,
 )
 from test_framework.address import (
@@ -284,7 +283,7 @@ class MiniWallet:
     def create_self_transfer_multi(
         self,
         *,
-        utxos_to_spend: Optional[List[dict]] = None,
+        utxos_to_spend: Optional[list[dict]] = None,
         num_outputs=1,
         amount_per_output=0,
         locktime=0,

test/functional/wallet_fast_rescan.py

@@ -4,8 +4,6 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test that fast rescan using block filters for descriptor wallets detects
    top-ups correctly and finds the same transactions than the slow variant."""
-from typing import List
-
 from test_framework.address import address_to_scriptpubkey
 from test_framework.descriptors import descsum_create
 from test_framework.test_framework import BitcoinTestFramework
@@ -32,7 +30,7 @@ class WalletFastRescanTest(BitcoinTestFramework):
         self.skip_if_no_wallet()
         self.skip_if_no_sqlite()
 
-    def get_wallet_txids(self, node: TestNode, wallet_name: str) -> List[str]:
+    def get_wallet_txids(self, node: TestNode, wallet_name: str) -> list[str]:
         w = node.get_wallet_rpc(wallet_name)
         txs = w.listtransactions('*', 1000000)
         return [tx['txid'] for tx in txs]

test/lint/lint-files.py

@@ -11,7 +11,7 @@ import os
 import re
 import sys
 from subprocess import check_output
-from typing import Dict, Optional, NoReturn
+from typing import Optional, NoReturn
 
 CMD_TOP_LEVEL = ["git", "rev-parse", "--show-toplevel"]
 CMD_ALL_FILES = ["git", "ls-files", "-z", "--full-name", "--stage"]
@@ -69,7 +69,7 @@ class FileMeta(object):
             return None
 
 
-def get_git_file_metadata() -> Dict[str, FileMeta]:
+def get_git_file_metadata() -> dict[str, FileMeta]:
     '''
     Return a dictionary mapping the name of all files in the repository to git tree metadata.
     '''

test/lint/lint-include-guards.py

@@ -11,7 +11,6 @@ Check include guards.
 import re
 import sys
 from subprocess import check_output
-from typing import List
 
 
 HEADER_ID_PREFIX = 'BITCOIN_'
@@ -28,7 +27,7 @@ EXCLUDE_FILES_WITH_PREFIX = ['contrib/devtools/bitcoin-tidy',
                              'src/test/fuzz/FuzzedDataProvider.h']
 
 
-def _get_header_file_lst() -> List[str]:
+def _get_header_file_lst() -> list[str]:
     """ Helper function to get a list of header filepaths to be
         checked for include guards.
     """