update code (#9)

Co-authored-by: xuyang1 <xuyang1@microsoft.com>

rdagent/factor_implementation/share_modules/exception.py

@@ -0,0 +1,26 @@
+class ImplementRunException(Exception):
+    """
+    Exceptions raised when Implementing and running code.
+    - start: FactorImplementationTask => FactorGenerator
+    - end: Get dataframe after execution
+
+    The more detailed evaluation in dataframe values are managed by the evaluator.
+    """
+
+
+class CodeFormatException(ImplementRunException):
+    """
+    The generated code is not found due format error.
+    """
+
+
+class RuntimeErrorException(ImplementRunException):
+    """
+    The generated code fail to execute the script.
+    """
+
+
+class NoOutputException(ImplementRunException):
+    """
+    The code fail to generate output file.
+    """