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Make a copy of external data instead of mutating another object's attributes. (#11349)

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Fix for a bug surfaced as part of #11339. `mypy` caught this since the
types didn't match up.
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Predrag Gruevski 2023-10-03 15:27:51 -04:00 committed by GitHub
parent 42d979efdd
commit 5d6b83d9cf
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1 changed files with 4 additions and 1 deletions
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5
libs/experimental/langchain_experimental/comprehend_moderation/base_moderation.py
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@ -70,7 +70,10 @@ class BaseModeration:
elif isinstance(prompt, str): elif isinstance(prompt, str):
return text return text
elif isinstance(prompt, ChatPromptValue): elif isinstance(prompt, ChatPromptValue):
messages = prompt.messages # Copy the messages because we may need to mutate them.
# We don't want to mutate data we don't own.
messages = list(prompt.messages)
message = messages[self.chat_message_index] message = messages[self.chat_message_index]
if isinstance(message, HumanMessage): if isinstance(message, HumanMessage):