fix: Add constructor for McpError to allow setting field

Backport of #116 by @allenporter to v1.1.x branch. Fixes an issue where exception handling code fails with AttributeError when accessing the error field of McpError.
modelcontextprotocol · Jan 2, 2025 · b89cabc · b89cabc
1 parent 312e9da
commit b89cabc
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/mcp/shared/exceptions.py b/src/mcp/shared/exceptions.py
@@ -7,3 +7,8 @@ class McpError(Exception):
     """
 
     error: ErrorData
+
+    def __init__(self, error: ErrorData):
+        """Initialize McpError."""
+        super().__init__(error.message)
+        self.error = error