Can i get source code to get reviews using gmb python code also heard mybusiness is discontinued. I tried using my business api is discontinued can i get the implementation process to look for extracting gmb reviews using python code.

According to the documentation accounts.locations.review, in JAVA, supposing that the variable mybusiness is taking care of authentication and API initialization:

MyBusiness.Accounts.Locations.Reviews.List reviewsList =mybusiness.accounts().locations().reviews().list("your location name");ListReviewsResponse response = reviewsList.execute();List<Review> reviews = response.getReviews();
while(response.getNextPageToken()!=null) {reviewsList.setPageToken(response.getNextPageToken());response = reviewsList.execute();reviews.addAll(response.getReviews());}
for (Review review : reviews) {System.out.println(review.toString());
}

for python you can have a look at this link

https://github.com/dresenhista/google_my_business