opencv installation on mac

error1.log

3.7.3 (default, Mar 27 2019, 09:23:15)
[Clang 10.0.1 (clang-1001.0.46.3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.7/site-packages/cv2/__init__.py", line 89, in <module>
    bootstrap()
  File "/usr/local/lib/python3.7/site-packages/cv2/__init__.py", line 79, in bootstrap
    import cv2
ImportError: dlopen(/usr/local/lib/python3.7/site-packages/cv2/python-3.7/cv2.cpython-37m-darwin.so, 2): Library not loaded: /usr/local/opt/glog/lib/libglog.0.dylib
  Referenced from: /usr/local/Cellar/opencv/4.1.0_1/lib/libopencv_sfm.4.1.dylib
  Reason: image not found
>>> brew
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'brew' is not defined
>>>

fix1.sh

brew reinstall glog

init.sh

brew update
brew install opencv