from tensorflow.keras.layers import Dense,Flatten,Input

打印一下路径：

import tensorflow as tf
import keras
print(tf.__path__)
print(keras.__path__)

['E:\\开发工具\\pythonProject\\studyLL\\venv\\lib\\site-packages\\keras\\api\\_v2',

'E:\\开发工具\\pythonProject\\studyLL\\venv\\lib\\site-packages\\keras\\_tf_keras',

'E:\\开发工具\\pythonProject\\studyLL\\venv\\lib\\site-packages\\tensorflow_estimator\\python\\estimator\\api\\_v2',

'E:\\开发工具\\pythonProject\\studyLL\\venv\\lib\\site-packages\\tensorboard\\summary\\_tf', 'E:\\开发工具\\pythonProject\\studyLL\\venv\\lib\\site-packages\\tensorflow',

'E:\\开发工具\\pythonProject\\studyLL\\venv\\lib\\site-packages\\tensorflow\\_api\\v2']
['E:\\开发工具\\pythonProject\\studyLL\\venv\\lib\\site-packages\\keras'] 

做一下修改，分开来引用：

import tensorflow as tf
import keras
from keras.layers import Dense,Flatten,Input
from keras.models import Model
from tensorflow.python.keras.layers.embeddings import Embedding
from keras.preprocessing.sequence import pad_sequences
from keras.preprocessing.text import one_hot
import numpy as np

运行报错：

ImportError: Could not find the DLL(s) 'msvcp140_1.dll'. TensorFlow requires 
that these DLLs be installed in a directory that is named in your %PATH% environment variable. 
You may install these DLLs by downloading "Microsoft C++ Redistributable for Visual 
Studio 2015, 2017 and 2019" for your platform from this URL:
 https://support.microsoft.com/help/2977003/the-latest-supported-visual-c-downloads

链接：https://learn.microsoft.com/zh-CN/cpp/windows/latest-supported-vc-redist?view=msvc-170 

下载x64进行安装

再次运行tensorflow就ok了。