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#!/usr/bin/env python3
# Combine (and shorten) parquet files into a single file
import glob
import pandas as pd
from merge_parquets import merge_parquet_dir
MAX_LENGTH = 1000 # max length of question or answer
for file in glob.glob("full/*.parquet"):
df = pd.read_parquet(file)
before = len(df)
df = df[df["INSTRUCTION"].str.len() < MAX_LENGTH]
df = df[df["RESPONSE"].str.len() < MAX_LENGTH]
df["METADATA"] = df["METADATA"].apply(
lambda meta: {
"tags": meta["tags"],
"answer_score": int(meta["answer_score"]) if "answer_score" in meta and meta["answer_score"] else 0,
"question_score": int(meta["question_score"]) if "question_score" in meta and meta["question_score"] else 0,
}
)
df.to_parquet(file)
after = len(df)
print(f"Shortened {file} from {before} to {after} rows ({100 * after / before:.2f})")
merge_parquet_dir("full", "stackexchange.parquet")
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