python安装cv2模块_python 找不到cv2模块

E:\python\project>pip install numpy

Collecting numpy

Downloading numpy-1.11.2-cp27-none-win_amd64.whl (7.4MB)

46% |███████████████                 | 3.5MB 35kB/s eta 0:01:51Exception:

Traceback (most recent call last):

File "d:\program files\python27\lib\site-packages\pip\basecommand.py", line 209, in main

status = self.run(options, args)

File "d:\program files\python27\lib\site-packages\pip\commands\install.py", line 299, in run

requirement_set.prepare_files(finder)

File "d:\program files\python27\lib\site-packages\pip\req\req_set.py", line 360, in prepare_files

ignore_dependencies=self.ignore_dependencies))

File "d:\program files\python27\lib\site-packages\pip\req\req_set.py", line 577, in _prepare_file

session=self.session, hashes=hashes)

File "d:\program files\python27\lib\site-packages\pip\download.py", line 810, in u