can't get access to python lmdb , ' object has no attribute 'Environment''

Question

I am using lmdb python to load the data

def create_dataset():

    img_db_fn = 'data/image_train.lmdb'        
    img_env = lmdb.Environment(img_db_fn, map_size=1099511627776)
    img_txn = img_env.begin(write=True, buffers=True)
    keys = np.arange(100000)
    np.random.shuffle(keys)
    img_fns = glob.glob('data/positive/*.jpg')
    img_fns += glob.glob('data/negtive/*.jpg')
    print len(img_fns)  , len(jnt_fns)
    for i, img_fn in enumerate(  img_fns ):
        img_datum = get_img_datum(img_fn)
        key = '%06d' % keys[i]    
        img_txn.put(key, img_datum.SerializeToString())
        if i % 10000 == 0:
            print 'commit',i
            img_txn.commit()
            img_txn = img_env.begin(write=True, buffers=True)

    img_txn.commit()
    img_env.close()

I got a error saying 'img_env = lmdb.Environment(img_db_fn, map_size=1099511627776) AttributeError: 'module' object has no attribute 'Environment''

Answer 1

In case anyone like me find this article on top of your Google Search,

If you simply call

pip install lmdb

on Linux, it wont actually install lmdb correctly.

To install it, you will also need to install some package:

apt-get install libffi-dev python-dev build-essential

Document on LMDB website: https://lmdb.readthedocs.io/en/release/#installation-unix