Improve fix for UnicodeDecodeError in JSON loading

aider/exceptions.py

@@ -58,36 +58,18 @@ class LiteLLMExceptions:
         self._load()
 
     def _load(self, strict=False):
-        # Patch litellm's JSON loading to use UTF-8 encoding
-        import json
+        # Import litellm - json.load is already patched in aider.llm
         import litellm
-        from pathlib import Path
 
-        # Monkey patch json.load in litellm.utils to handle UTF-8 encoding
-        original_json_load = json.load
+        # Load litellm exceptions
+        for var in dir(litellm):
+            if var.endswith("Error"):
+                if var not in self.exception_info:
+                    raise ValueError(f"{var} is in litellm but not in aider's exceptions list")
 
-        def patched_json_load(fp, *args, **kwargs):
-            # Read the file content with UTF-8 encoding
-            content = Path(fp.name).read_text(encoding='utf-8')
-            # Parse the content as JSON
-            return json.loads(content, *args, **kwargs)
-
-        # Apply the monkey patch
-        json.load = patched_json_load
-
-        try:
-            # Now load litellm exceptions
-            for var in dir(litellm):
-                if var.endswith("Error"):
-                    if var not in self.exception_info:
-                        raise ValueError(f"{var} is in litellm but not in aider's exceptions list")
-
-            for var in self.exception_info:
-                ex = getattr(litellm, var)
-                self.exceptions[ex] = self.exception_info[var]
-        finally:
-            # Restore the original json.load function
-            json.load = original_json_load
+        for var in self.exception_info:
+            ex = getattr(litellm, var)
+            self.exceptions[ex] = self.exception_info[var]
 
     def exceptions_tuple(self):
         return tuple(self.exceptions)

aider/llm.py

@@ -1,6 +1,8 @@
 import importlib
+import json
 import os
 import warnings
+from pathlib import Path
 
 from aider.dump import dump  # noqa: F401
 
@@ -17,6 +19,27 @@ os.environ["LITELLM_MODE"] = "PRODUCTION"
 
 VERBOSE = False
 
+# Patch json.load to handle UTF-8 encoding for litellm
+original_json_load = json.load
+
+def patched_json_load(fp, *args, **kwargs):
+    try:
+        # First try the original method
+        return original_json_load(fp, *args, **kwargs)
+    except UnicodeDecodeError:
+        # If it fails with UnicodeDecodeError, try with UTF-8 encoding
+        try:
+            # Read the file content with UTF-8 encoding
+            content = Path(fp.name).read_text(encoding='utf-8')
+            # Parse the content as JSON
+            return json.loads(content, *args, **kwargs)
+        except Exception:
+            # If that also fails, re-raise the original exception
+            raise
+
+# Apply the monkey patch
+json.load = patched_json_load
+
 
 class LazyLiteLLM:
     _lazy_module = None