Python package installation error for openCV
It looks like you have not given a valid file location.
The error is saying that it thinks you have given it a whl file to install but it can't find it.
I suggest you check you file path again.
Make sure it is located at C:\Users\Om and it is called exactly the same as the filename you have put down.  It should match opencv_python-3.2.0-cp36-cp36m-win32.whl exactly.  
Ensure you do not rename the whl file.
Correct that and it will attempt an install and if that does not work you will get another error.
C:\Users\Om>pip install opencv_python-3.2.0-cp36-cp36m-win32.whl
Requirement 'opencv_python-3.2.0-cp36-cp36m-win32.whl' looks like a filename, but the file does not exist
Processing c:\users\om\opencv_python-3.2.0-cp36-cp36m-win32.whl
Exception:
  Traceback (most recent call last):
    File "c:\users\om\appdata\local\programs\python\python36-32\lib\site-packages\pip\basecommand.py", line 215, in main
      status = self.run(options, args)
File "c:\users\om\appdata\local\programs\python\python36-32\lib\site-packages\pip\commands\install.py", line 324, in run
      requirement_set.prepare_files(finder)
File "c:\users\om\appdata\local\programs\python\python36-32\lib\site-packages\pip\req\req_set.py", line 380, in prepare_files
      ignore_dependencies=self.ignore_dependencies))
File "c:\users\om\appdata\local\programs\python\python36-32\lib\site-packages\pip\req\req_set.py", line 620, in _prepare_file
      session=self.session, hashes=hashes)
File "c:\users\om\appdata\local\programs\python\python36-32\lib\site-packages\pip\download.py", line 809, in unpack_url
      unpack_file_url(link, location, download_dir, hashes=hashes)
File "c:\users\om\appdata\local\programs\python\python36-32\lib\site-packages\pip\download.py", line 715, in unpack_file_url
      unpack_file(from_path, location, content_type, link)
File "c:\users\om\appdata\local\programs\python\python36-32\lib\site-packages\pip\utils__init__.py", line 599, in unpack_file
      flatten=not filename.endswith('.whl')
File "c:\users\om\appdata\local\programs\python\python36-32\lib\site-packages\pip\utils__init__.py", line 482, in unzip_file
      zipfp = open(filename, 'rb')
FileNotFoundError: [Errno 2] No such file or directory: 'C:\Users\Om\opencv_python-3.2.0-cp36-cp36m-win32.whl'

what is the problem ?