#!/usr/bin/env python3
import base64
import io
import pandas as pd

df = pd.read_parquet('/Users/chufeng/nas/stock-data/sanguo_quant_live/zhaoyun-data/data/raw/daily/sh510300_daily.parquet')
buffer = io.BytesIO()
df.to_parquet(buffer, compression='snappy')
buffer.seek(0)
data = buffer.getvalue()
b64 = base64.b64encode(data).decode('utf-8')

output_file = '/tmp/510300_daily.b64'
with open(output_file, 'w') as f:
    f.write(b64)

print(f"Generated {output_file}")
print(f"Size: {len(b64)} characters")