tensorflow basic, session

session1.py

import tensorflow as tf

const = tf.constant("hello world")
print(const)

session2.py

import tensorflow as tf

const = tf.constant("hello world")
sess = tf.Session() 

hello = sess.run(const)
print(hello)

sess.close()

session3.py

import tensorflow as tf

const = tf.constant("hello world")

with tf.Session() as sess:
  hello = sess.run(const)
  print(hello)

session4.py

import tensorflow as tf

const = tf.constant(10)

with tf.Session() as sess:
  ten = sess.run(const)
  print(ten)

session5.py

import tensorflow as tf

one = tf.constant(1)
two = tf.constant(2)
three = tf.contant(3)
four = tf.constant(4)
five = tf.constant(5)

add12 = one + two
add123 = add12 + three

add34 = three + four
add2345 = two + add34 + five

total = add123 + add2345

with tf.Session() as sess:
  six = sess.run(add123)
  fourteen = sess.run(add2345)
  twenty = sess.run(total)
  
  print(six)
  print(fourteen)
  print(twenty)