Import error after installing tensorflow - python-3.x

Question

I tried installing tensorflow as given in the link Installing Tensor flow
I installed it inside virtual environment. I am getting import error as given at the end in edit.
I've set the following environment variables.
PATH=/usr/local/cuda-8.0/bin:rest/of/the/path
LD_LIBARY_PATH=/home/harshit/Drivers/cudnn5.0/cuda/:/usr/local/cuda-8.0/lib64/:/usr/local/cuda/lib64/
Moreover, I also tried manually copying the files of cudnn but still no luck. That is, I have libcudnn.so.5 in both /usr/local/cuda/lib64 and /usr/local/cuda-8.0/lib64.
As given in other related posts, problem is usually due to environment paths but I feel they are quite correct in my case, but still error persists.
Please help!
Edit- Here is the complete error traceback-
(env) harshit#echo:~$ python
Python 3.5.3 (default, Jan 19 2017, 14:11:04)
[GCC 6.3.0 20170118] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import tensorflow
Traceback (most recent call last):
File "/home/harshit/Documents/projects/tensorflowplay/env/lib/python3.5/site-packages/tensorflow/python/pywrap_tensorflow.py", line 41, in <module>
from tensorflow.python.pywrap_tensorflow_internal import *
File "/home/harshit/Documents/projects/tensorflowplay/env/lib/python3.5/site-packages/tensorflow/python/pywrap_tensorflow_internal.py", line 28, in <module>
_pywrap_tensorflow_internal = swig_import_helper()
File "/home/harshit/Documents/projects/tensorflowplay/env/lib/python3.5/site-packages/tensorflow/python/pywrap_tensorflow_internal.py", line 24, in swig_import_helper
_mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, description)
File "/home/harshit/Documents/projects/tensorflowplay/env/lib/python3.5/imp.py", line 242, in load_module
return load_dynamic(name, filename, file)
File "/home/harshit/Documents/projects/tensorflowplay/env/lib/python3.5/imp.py", line 342, in load_dynamic
return _load(spec)
ImportError: libcudnn.so.5: cannot open shared object file: No such file or directory
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/harshit/Documents/projects/tensorflowplay/env/lib/python3.5/site-packages/tensorflow/__init__.py", line 24, in <module>
from tensorflow.python import *
File "/home/harshit/Documents/projects/tensorflowplay/env/lib/python3.5/site-packages/tensorflow/python/__init__.py", line 51, in <module>
from tensorflow.python import pywrap_tensorflow
File "/home/harshit/Documents/projects/tensorflowplay/env/lib/python3.5/site-packages/tensorflow/python/pywrap_tensorflow.py", line 52, in <module>
raise ImportError(msg)
ImportError: Traceback (most recent call last):
File "/home/harshit/Documents/projects/tensorflowplay/env/lib/python3.5/site-packages/tensorflow/python/pywrap_tensorflow.py", line 41, in <module>
from tensorflow.python.pywrap_tensorflow_internal import *
File "/home/harshit/Documents/projects/tensorflowplay/env/lib/python3.5/site-packages/tensorflow/python/pywrap_tensorflow_internal.py", line 28, in <module>
_pywrap_tensorflow_internal = swig_import_helper()
File "/home/harshit/Documents/projects/tensorflowplay/env/lib/python3.5/site-packages/tensorflow/python/pywrap_tensorflow_internal.py", line 24, in swig_import_helper
_mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, description)
File "/home/harshit/Documents/projects/tensorflowplay/env/lib/python3.5/imp.py", line 242, in load_module
return load_dynamic(name, filename, file)
File "/home/harshit/Documents/projects/tensorflowplay/env/lib/python3.5/imp.py", line 342, in load_dynamic
return _load(spec)
ImportError: libcudnn.so.5: cannot open shared object file: No such file or directory
Failed to load the native TensorFlow runtime.
See https://www.tensorflow.org/install/install_sources#common_installation_problems
for some common reasons and solutions. Include the entire stack trace
above this error message when asking for help.

Answer 1

I think your libcudnn.so files are not linked correctly.
Please do
$ sudo ldconfig
This will show you the files in /path/to/cuda-8.0/lib64 that are not linked properly.
These should be libcudnn.so and libcudnn.so.5 (as per your error).
Try to attempt the following commands on your terminal:
If you have cudnn v6 (like I have):
$ cd /path/to/cuda-8.0/lib64
Please remove libcudnn.so.6 and libcudnn.so from this folder if you have copied these manually from the NVIDIA CUDNN package.
$ sudo ln -s libcudnn.so.6.0.21 libcudnn.so.6
$ sudo ln -s libcudnn.so.6 libcudnn.so
$ sudo ldconfig
Please change the file names according to the version of cudnn you are using.