py-classic-code/leveldb/leveldb_test.py

#!/usr/bin/env python
# -*- coding:utf-8 -*-

__author__ = "ZhenQin"

import os, stat
import os.path as path
from datetime import datetime
import shutil
import logging
import sys
import leveldb

db = leveldb.LevelDB('./db')

db.Put('hello'.encode("UTF-8"), 'world'.encode("UTF-8")) 
print(db.Get('hello'.encode("UTF-8")).decode("UTF-8"))

batch = leveldb.WriteBatch()
batch.Put('hello'.encode("UTF-8"), 'world'.encode("UTF-8"))
batch.Put('hello again'.encode("UTF-8"), 'world'.encode("UTF-8")) 
# batch.Delete('hello'.encode("UTF-8"))

for i in range(1, 100000):
    key = "hello_" + str(i)
    val = "world_" + str(i)
    batch.Put(key.encode("UTF-8"), val.encode("UTF-8")) 

db.Write(batch, sync = True)
# db.close()

if __name__ == "__main__":
    pass