Changes from comments on PR ethereum#1781:

- Use Prague.precompiles() for precompile addresses in convert_addresses.py

Author: fselmo

scripts/convert_addresses.py

@@ -11,6 +11,7 @@
 from typing import Dict, Set, Optional, List
 from pathlib import Path
 from enum import Enum, auto
+from ethereum_test_forks import Prague
 
 class Section(Enum):
     """Represents the current section being parsed."""
@@ -36,26 +37,7 @@ class Context(Enum):
 #  to generate a dynamic address for it in both the `result` and `currentCoinbase` sections
 CONVERT_COINBASE = False
 
-# Ethereum precompile addresses (0x01 through 0x11)
-PRECOMPILE_ADDRESSES = {
-    '0000000000000000000000000000000000000001',
-    '0000000000000000000000000000000000000002',
-    '0000000000000000000000000000000000000003',
-    '0000000000000000000000000000000000000004',
-    '0000000000000000000000000000000000000005',
-    '0000000000000000000000000000000000000006',
-    '0000000000000000000000000000000000000007',
-    '0000000000000000000000000000000000000008',
-    '0000000000000000000000000000000000000009',
-    '000000000000000000000000000000000000000a',
-    '000000000000000000000000000000000000000b',
-    '000000000000000000000000000000000000000c',
-    '000000000000000000000000000000000000000d',
-    '000000000000000000000000000000000000000e',
-    '000000000000000000000000000000000000000f',
-    '0000000000000000000000000000000000000010',
-    '0000000000000000000000000000000000000011',
-}
+PRECOMPILE_ADDRESSES = {pre.hex() for pre in Prague.precompiles()}
 
 #TODO: check these manually for false positives
 # callToSuicideThenExtcodehashFiller.json  -- hard-coded 000...00025