ImportError：无法在Python 3中导入名称'encode'，'batch_gen'

Question

您好，我无法导入batch_gen，无法从数据库进行编码。

from data import batch_gen, encode

错误：

ImportError: cannot import name 'batch_gen'

ImportError: cannot import name 'encode'

Python版本：

3.5.2 |Anaconda 4.2.0 (64-bit)| (default, Jul  5 2016, 11:41:13) [MSC v.1900 64 bit (AMD64)]

Answer 1

删除此行

from data import batch_gen, encode

相反，添加这两个功能

def encode(X,seq_len, vocab_size):
x = np.zeros((len(X),seq_len, vocab_size), dtype=np.float32)
for ind,batch in enumerate(X):
    for j, elem in enumerate(batch):
        x[ind, j, elem] = 1
return x

def batch_gen(batch_size=32, seq_len=10, max_no=100):
# Randomly generate a batch of integer sequences (X) and its sorted
# counterpart (Y)
x = np.zeros((batch_size, seq_len, max_no), dtype=np.float32)
y = np.zeros((batch_size, seq_len, max_no), dtype=np.float32)

while True:
# Generates a batch of input
    X = np.random.randint(max_no, size=(batch_size, seq_len))

    Y = np.sort(X, axis=1)

    for ind,batch in enumerate(X):
        for j, elem in enumerate(batch):
            x[ind, j, elem] = 1

    for ind,batch in enumerate(Y):
        for j, elem in enumerate(batch):
            y[ind, j, elem] = 1

    yield x, y
    x.fill(0.0)
    y.fill(0.0)