Add pre-imports for common libraries

Modules/Code_Interpreter.py

@@ -26,15 +26,39 @@ def Code_Interpreter(code: Annotated[str, "Python source code to run; stdout is
         result = "No code provided."
         _log_call_end("Code_Interpreter", result)
         return result
+    
+    # Pre-import commonly used libraries to make them available
+    pre_imports = """
+try:
+    import pandas as pd
+    import numpy as np
+    import matplotlib.pyplot as plt
+    import seaborn as sns
+    import io
+    import requests
+    import json
+    from datetime import datetime, timedelta
+    import re
+except ImportError as e:
+    print(f"Warning: Could not import some libraries: {e}")
+
+"""
+    
+    # Combine pre-imports with user code
+    full_code = pre_imports + "\n" + code
+    
     old_stdout = sys.stdout
     old_cwd = os.getcwd()
     redirected_output = sys.stdout = StringIO()
     try:
         os.chdir(ROOT_DIR)
-        exec(code)
+        exec(full_code, globals())
         result = redirected_output.getvalue()
+        if not result:
+            result = "Code executed successfully (no output)"
     except Exception as exc:  # pylint: disable=broad-except
-        result = str(exc)
+        import traceback
+        result = f"Error: {exc}\n\nFull traceback:\n{traceback.format_exc()}"
     finally:
         sys.stdout = old_stdout
         try: