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fix: add missing crop function to _DATA_FILE_HELPER_LIB #4015

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fix: add missing crop function to _DATA_FILE_HELPER_LIB #4015

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fix: add missing crop function to _DATA_FILE_HELPER_LIB
osushinekotan Dec 24, 2025
b3b1382
fix: Improve `crop` function logic to correctly handle small `max_cha…
osushinekotan Dec 24, 2025
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4 changes: 4 additions & 0 deletions src/google/adk/flows/llm_flows/_code_execution.py
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Expand Up @@ -76,6 +76,10 @@ class DataFileUtil:
_DATA_FILE_HELPER_LIB = '''
import pandas as pd

def crop(s: str, max_chars: int = 64) -> str:
"""Crops a string to max_chars characters."""
return s[: max_chars - 3] + '...' if len(s) > max_chars else s

@gemini-code-assist gemini-code-assist Bot Dec 24, 2025

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medium

The current implementation of crop has a bug when max_chars is less than 3. For example, if s = 'abc' and max_chars = 2, the function returns 'ab...', which has a length of 5, exceeding the specified max_chars.

To ensure the cropped string never exceeds max_chars, the logic should handle small values of max_chars as a special case, for instance by truncating the string without adding an ellipsis.

Suggested change
return s[: max_chars - 3] + '...' if len(s) > max_chars else s
if len(s) <= max_chars:
return s
if max_chars >= 3:
return s[:max_chars - 3] + '...'
return s[:max_chars]

@osushinekotan osushinekotan Dec 24, 2025

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Thanks for catching this! Fixed to handle small max_chars values.
b3b1382


def explore_df(df: pd.DataFrame) -> None:
"""Prints some information about a pandas DataFrame."""

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