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/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,