KORE FileFormat — Python
High-performance columnar format with 11 ACID features. Reads/writes via Rust kore_ffi.dll through ctypes.
Install
pip install kore-fileformat==1.6.6
Or from source (requires Rust):
cargo build --release -p kore-ffi
pip install -e .
Quick Start
import kore_fileformat as kore
# --- Write ---
block = kore.DataBlock()
block.add_column('price', kore.DataType.F64, [10.5, 20.0, 30.75])
block.add_column('quantity', kore.DataType.I64, [100, 200, 300])
kore.write_file('data.kore', block)
# --- Read ---
result = kore.read_file('data.kore')
print(f'{result.num_rows} rows, {result.num_columns} columns')
price_col = result.get_column('price')
print(price_col.data) # [10.5, 20.0, 30.75]
# --- CRC32 checksum ---
checksum = kore.crc32(b'hello kore')
print(f'crc32 = {checksum:#010x}') # 0x4b029b4b
API Reference
| Function | Description |
|---|---|
write_file(path, block) |
Write DataBlock to .kore binary |
read_file(path) |
Read .kore binary into DataBlock |
crc32(data: bytes) |
CRC32 checksum |
DataBlock() |
Create empty block |
block.add_column(name, dtype, data) |
Add a column |
block.get_column(name) |
Get column by name |
Data Types
kore.DataType.I64 # 64-bit integer
kore.DataType.F64 # 64-bit float
kore.DataType.STR # UTF-8 string
kore.DataType.STR_DICT # Dictionary-encoded string (compressed)
kore.DataType.BOOL # Boolean
Run Tests
python -m pytest test_kore_fileformat.py -v
python test_phase3.py
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