fixed transaction import

config.py

@@ -4,13 +4,8 @@ Configuration for the pump.fun trading bot.
 
 from typing import Final
 
-import os
-
-from dotenv import load_dotenv
 from solders.pubkey import Pubkey
 
-load_dotenv()
-
 # System & pump.fun addresses
 PUMP_PROGRAM: Final[Pubkey] = Pubkey.from_string(
     "6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P"
@@ -45,9 +40,9 @@ BUY_AMOUNT = 0.0001  # Amount of SOL to spend when buying
 BUY_SLIPPAGE = 0.2  # 20% slippage tolerance for buying
 SELL_SLIPPAGE = 0.2  # 20% slippage tolerance for selling
 ENABLE_DYNAMIC_PRIORITY_FEE = (
-    True  # getRecentPriorityFee is used to get current priority fee
+    True  # TODO: getRecentPriorityFee is used to get current priority fee
 )
-EXTRA_PRIORITY_FEE = 0.1  # 10% increase in dynamic priority fee
+EXTRA_PRIORITY_FEE = 0.1  # TODO: 10% increase in dynamic priority fee
 
 TOKEN_DECIMALS: Final[int] = 6
 MAX_RETRIES: int = 5
@@ -55,6 +50,6 @@ WAIT_TIME_AFTER_BUY: int = 20
 WAIT_TIME_BEFORE_NEW_TOKEN: int = 5
 WAIT_TIME_AFTER_CREATION: int = 15
 
-# RPS of your node to avoid rate limit errors
+# TODO: RPS of your node to avoid rate limit errors
 # You can also get a trader node https://docs.chainstack.com/docs/solana-trader-nodes
 MAX_RPS = 25

src/core/client.py

@@ -8,10 +8,10 @@ from typing import Any, Dict, List, Optional, Tuple, Union
 from solana.rpc.async_api import AsyncClient
 from solana.rpc.commitment import Confirmed
 from solana.rpc.types import TxOpts
-from solana.transaction import Transaction
 from solders.instruction import Instruction
 from solders.keypair import Keypair
 from solders.pubkey import Pubkey
+from solders.transaction import Transaction
 
 from src.utils.logger import get_logger
 

src/trading/base.py

@@ -64,10 +64,10 @@ class TradeResult:
     """Result of a trading operation."""
 
     success: bool
-    tx_signature: Optional[str] = None
-    error_message: Optional[str] = None
-    amount: Optional[float] = None
-    price: Optional[float] = None
+    tx_signature: str | None = None
+    error_message: str | None = None
+    amount: float | None = None
+    price: float | None = None
 
 
 class Trader(ABC):

src/trading/buyer.py

@@ -10,11 +10,11 @@ import spl.token.instructions as spl_token
 from solana.rpc.async_api import AsyncClient
 from solana.rpc.commitment import Confirmed
 from solana.rpc.types import TxOpts
-from solana.transaction import Transaction
 from solders.instruction import AccountMeta, Instruction
 from solders.keypair import Keypair
 from solders.pubkey import Pubkey
 from solders.system_program import TransferParams, transfer
+from solders.transaction import Transaction
 from spl.token.instructions import get_associated_token_address
 
 from src.core.client import SolanaClient

src/trading/seller.py

@@ -6,9 +6,9 @@ import asyncio
 import struct
 from typing import Optional
 
-from solana.transaction import Transaction
 from solders.instruction import AccountMeta, Instruction
 from solders.pubkey import Pubkey
+from solders.transaction import Transaction
 
 from src.core.client import SolanaClient
 from src.core.curve import BondingCurveManager