Win7，python3.6，pip安装tensorflow之后报错：
>>> import tensorflow
Traceback (most recent call last):
File "D:\AppSetPlace\python36\lib\site-packages\tensorflow\python\pywrap_tenso
rflow.py", line 58, in <module>
from tensorflow.python.pywrap_tensorflow_internal import *
File "D:\AppSetPlace\python36\lib\site-packages\tensorflow\python\pywrap_tenso
rflow_internal.py", line 28, in <module>
_pywrap_tensorflow_internal = swig_import_helper()
File "D:\AppSetPlace\python36\lib\site-packages\tensorflow\python\pywrap_tenso
rflow_internal.py", line 24, in swig_import_helper
_mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, descript
ion)
File "D:\AppSetPlace\python36\lib\imp.py", line 242, in load_module
return load_dynamic(name, filename, file)
File "D:\AppSetPlace\python36\lib\imp.py", line 342, in load_dynamic
return _load(spec)
ImportError: DLL load failed with error code -1073741795 During handling of the above exception, another exception occurred: Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "D:\AppSetPlace\python36\lib\site-packages\tensorflow\__init__.py", line
28, in <module>
from tensorflow.python import pywrap_tensorflow # pylint: disable=unused-im
port
File "D:\AppSetPlace\python36\lib\site-packages\tensorflow\python\__init__.py"
, line 49, in <module>
from tensorflow.python import pywrap_tensorflow
File "D:\AppSetPlace\python36\lib\site-packages\tensorflow\python\pywrap_tenso
rflow.py", line 74, in <module>
raise ImportError(msg)
ImportError: Traceback (most recent call last):
File "D:\AppSetPlace\python36\lib\site-packages\tensorflow\python\pywrap_tenso
rflow.py", line 58, in <module>
from tensorflow.python.pywrap_tensorflow_internal import *
File "D:\AppSetPlace\python36\lib\site-packages\tensorflow\python\pywrap_tenso
rflow_internal.py", line 28, in <module>
_pywrap_tensorflow_internal = swig_import_helper()
File "D:\AppSetPlace\python36\lib\site-packages\tensorflow\python\pywrap_tenso
rflow_internal.py", line 24, in swig_import_helper
_mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, descript
ion)
File "D:\AppSetPlace\python36\lib\imp.py", line 242, in load_module
return load_dynamic(name, filename, file)
File "D:\AppSetPlace\python36\lib\imp.py", line 342, in load_dynamic
return _load(spec)
ImportError: DLL load failed with error code -1073741795
解决办法：
有人说（https://blog.csdn.net/fhqlongteng/article/details/80279197）是CPU太老了，我也不太懂CPU，但安装他说的办法：
问题的原因是我的电脑（联想V460）的cpu比较老，不支持AVX指令导致的，需要安装特殊编译的tensorflow 1.6.0版本才可以解决，注意安装时要先卸载先前安装的1.8.0版本。关于这个问题的详细解决过程可以参考github上面tensorflow的论坛。
问题解决了。
安装上面说的版本之后还可能出现一个错误：
from google.protobuf.pyext import _message，使用tensorflow出现 ImportError: DLL load failed
按照这篇博客（https://blog.csdn.net/u012193416/article/details/86301899）说的方法解决了问题：
在自动安装了tensorflow时， protobuf安装的是最新版本3.6.1， 出现了不兼容的问题。
更换为 protobuf 3.6.0即可（pip install protobuf==3.6.0）