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fix: invalid escape sequence error in regex pattern (#3902)

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This PR fixes the "SyntaxError: invalid escape sequence" error in the
pydantic.py file. The issue was caused by the backslashes in the regular
expression pattern being treated as escape characters. By using a raw
string literal for the regex pattern (e.g., r"\{.*\}"), this fix ensures
that backslashes are treated as literal characters, thus preventing the
error.

Co-authored-by: Tomer Levy <tomer.levy@tipalti.com>
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tomer555 2023-05-02 06:57:19 +03:00 committed by GitHub
parent c5c33786a7
commit 9acf80fd69
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1 changed files with 1 additions and 1 deletions
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langchain/output_parsers/pydantic.py
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@ -17,7 +17,7 @@ class PydanticOutputParser(BaseOutputParser[T]):
try:
# Greedy search for 1st json candidate.
match = re.search(
"\{.*\}", text.strip(), re.MULTILINE | re.IGNORECASE | re.DOTALL
r"\{.*\}", text.strip(), re.MULTILINE | re.IGNORECASE | re.DOTALL
)
json_str = ""
if match: