Initial commit

src/excel_mcp/exceptions.py

@@ -0,0 +1,35 @@
+class ExcelMCPError(Exception):
+    """Base exception for Excel MCP errors."""
+    pass
+
+class WorkbookError(ExcelMCPError):
+    """Raised when workbook operations fail."""
+    pass
+
+class SheetError(ExcelMCPError):
+    """Raised when sheet operations fail."""
+    pass
+
+class DataError(ExcelMCPError):
+    """Raised when data operations fail."""
+    pass
+
+class ValidationError(ExcelMCPError):
+    """Raised when validation fails."""
+    pass
+
+class FormattingError(ExcelMCPError):
+    """Raised when formatting operations fail."""
+    pass
+
+class CalculationError(ExcelMCPError):
+    """Raised when formula calculations fail."""
+    pass
+
+class PivotError(ExcelMCPError):
+    """Raised when pivot table operations fail."""
+    pass
+
+class ChartError(ExcelMCPError):
+    """Raised when chart operations fail."""
+    pass