TensorFlow warnings with Python

Question

running on Mac osX 10.13.2 , installed the cpu version of tensorflow

1. I installed tensorflow v1.4 and I'm getting this mismatch warning. luckily it executes but I don't know how to get tensorflow that matches Python 3.6 ??

2. I did the test to validate my installation and it's also a little odd. the print command doesn't look like it really executed. there is b ' ... ' ( see below )

3. some note about instructions that my cpu supports that tensorflow binary does not.

I'm new at this , so thanks..

Testing tensorflow in the terminal window on MacBook :

Last login: Tue Dec 12 11:36:14 on ttys000
fredericks-MBP:~ bravo$ python
Python 3.6.2 |Anaconda custom (64-bit)| (default, Sep 21 2017, 18:29:43) 
[GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> 
>>> import tensorflow as tf
/anaconda3/lib/python3.6/importlib/_bootstrap.py:205: RuntimeWarning: compiletime version 3.5 of module 'tensorflow.python.framework.fast_tensor_util' does not match runtime version 3.6
  return f(*args, **kwds)

========================= validate installation :

>>> hello = tf.constant('Hello, TensorFlow!')
>>> sess = tf.Session()
2017-12-12 11:48:30.408157: I tensorflow/core/platform/cpu_feature_guard.cc:137] Your CPU supports instructions that this TensorFlow binary was not compiled to use: SSE4.1 SSE4.2 AVX
>>> 
>>> print(sess.run(hello))
b'Hello, TensorFlow!'
>>> 

Answer 1

The b'...' regarding your point 2 is not a problem. The answer you are getting is a python bytes literals instead of a string, thus the b in front of it. See What does the 'b' character do in front of a string literal?