TensorFlow学习记录（一）

import tensorflow as tf

import numpy as np

na = np.arange(12).reshape(3,4)

ta= tf.convert_to_tensor(na)

print(type(na))

print(type(ta))

import tensorflow as tf

import numpy as np

a= tf.constant(np.arange(12).reshape(3,4))

print(a)

b=tf.split(a,[2,2],1)#张量存储顺序没有变，维度变换可以

print(b)

import tensorflow as tf

import pandas as pd

import numpy as np

url="http://download.tensorflow.org/data/iris_training.csv"

train_path=tf.keras.utils.get_file(url.split('/')[-1],url)

df_iris = pd.read_csv(train_path)

np.iris = np.array(df_iris)

iris=tf.convert_to_tensor(np.iris)

print(iris.shape)

print(iris[0,:])

print(iris[0:5,:])

二维张量导入和切片