如何解决此错误"'module' object is not callable"

Question

我导入了这些包

import keras
from keras.datasets import mnist
from keras.models import Sequential
from keras.models import Model
from keras.layers import Dense, Dropout, Flatten
from keras.layers import Conv2D, MaxPooling2D
from keras import backend as K
from keras.utils import np_utils
from keras import optimizer_v2
from keras.optimizer_v2 import adam

数据，在训练集和测试集之间分割

(x_train, y_train), (x_test, y_test) = mnist.load_data()
print(x_train.shape, y_train.shape)
x_train = x_train.reshape(x_train.shape[0], 28, 28, 1)
x_test = x_test.reshape(x_test.shape[0], 28, 28, 1)
input_shape = (28, 28, 1)
# convert class vectors to binary class matrices
y_train = keras.utils.np_utils.to_categorical(y_train, 10)
y_test = keras.utils.np_utils.to_categorical(y_test, 10)
x_train = x_train.astype('float32')
x_test = x_test.astype('float32')
x_train /= 255
x_test /= 255
print('x_train shape:', x_train.shape)
print(x_train.shape[0], 'train samples')
print(x_test.shape[0], 'test samples')

batch_size = 128
num_classes = 10
epochs = 10
model = Sequential()
model.add(Conv2D(32, kernel_size=(5, 5),activation='relu',input_shape=input_shape))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(Conv2D(64, (3, 3), activation='relu'))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(Flatten())
model.add(Dense(128, activation='relu'))
model.add(Dropout(0.3))
model.add(Dense(64, activation='relu'))
model.add(Dropout(0.5))
model.add(Dense(num_classes, activation='softmax'))

这就是我得到错误的地方

model.compile(loss=keras.losses.categorical_crossentropy,optimizer=keras.optimizer_v2.adam(learning_rate=0.01),metrics=['accuracy'])

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-11-64ffa4d65c71> in <module>
----> 1 model.compile(loss=keras.losses.categorical_crossentropy,optimizer=keras.optimizer_v2.adam(learning_rate=0.01),metrics=['accuracy'])
TypeError: 'module' object is not callable

如何解决这个错误?

Answer 1

keras.optimizer_v2.adam为模块。替换为keras.optimizer_v2.adam.Adam