Python Sklearn import error - python-3.x

Question

I'm new to machine learning libraries in python. I've installed 'python 3.4'.
I've also installed scikit-learn , numpy and scipy from wheel files.
scikit_learn-0.18.1-cp34-none-win_amd64
scipy-0.16.0-cp34-none-win_amd64
numpy-1.9.2-cp34-none-win_amd64.whl
import scipy
import numpy
above statements are working fine. but when i try to execute import sklearn
i get below error
Traceback (most recent call last):
File "C:\Users\Usman\Desktop\hello_python.py", line 1, in <module>
import sklearn
File "C:\Python34\Lib\site-packages\sklearn\__init__.py", line 57, in <module>
from .base import clone
File "C:\Python34\Lib\site-packages\sklearn\base.py", line 12, in <module>
from .utils.fixes import signature
File "C:\Python34\Lib\site-packages\sklearn\utils\__init__.py", line 10, in <module>
from .murmurhash import murmurhash3_32
File "__init__.pxd", line 155, in init sklearn.utils.murmurhash (sklearn\utils\murmurhash.c:6319)
ValueError: numpy.dtype has the wrong size, try recompiling. Expected 88, got 96
--edit
when i execute import sklearn from python shell i get the following error
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python34\Lib\site-packages\sklearn\__init__.py", line 56, in <module>
from . import __check_build
ImportError: cannot import name '__check_build'
I've searched but couldn't find anything helpful. Kindly help me remove this error.