Best checkpoint file not found

tests/test_mexc_account_privte.py

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+from NN.exchanges.mexc_interface import MEXCInterface
+import logging
+
+# Set up logging to see debug info
+logging.basicConfig(level=logging.INFO)
+
+# Create interface with API credentials
+mexc = MEXCInterface(
+    api_key='mx0aBYs33eIilxBWC5', 
+    api_secret='45d0b3c26f2644f19bfb98b07741b2f5',
+    trading_mode='simulation'
+)
+
+print('MEXC Interface created successfully')
+
+# Test signature generation
+import time
+timestamp = int(time.time() * 1000)
+test_params = 'quantity=1&price=11&symbol=BTCUSDT&side=BUY&type=LIMIT&timestamp=' + str(timestamp)
+signature = mexc._generate_signature(timestamp, test_params)
+print(f'Generated signature: {signature}')
+
+# Test account info
+print('Testing account info...')
+account_info = mexc.get_account_info()
+print(f'Account info result: {account_info}')
+
+# Test ticker data
+print('Testing ticker data...')
+ticker = mexc.get_ticker('ETH/USDT')
+print(f'ETH/USDT ticker: {ticker}')
+
+# Test balance retrieval
+print('Testing balance retrieval...')
+usdt_balance = mexc.get_balance('USDT')
+print(f'USDT balance: {usdt_balance}')
+
+# Test a small order placement (simulation mode)
+print('Testing order placement in simulation mode...')
+order_result = mexc.place_order('ETH/USDT', 'buy', 'market', 0.001)
+print(f'Order result: {order_result}')