from tensorflow.keras.models import Sequential from tensorflow.keras.layers import Dense model = Sequential() model.add(Dense(10, input_dim=7, activation='relu')) model.add(Dense(1, activation='sigmoid')) model.compile(loss='binary_crossentropy', optimizer='adam', metrics=['accuracy']) model.fit(X_train, y_train, epochs=50, batch_size=32, validation_data=(X_test, y_test))This example creates a neural network with two layers and trains it on a binary classification task. The `fit()` function trains the model for 50 epochs using a batch size of 32 and uses a validation set for monitoring the performance of the model during training. The package library used in this example is `tensorflow.keras`.