如何在json字典中的列表中调用值

Question

I'm using api's to call movie reviews in the format 'title': [rating, review]. After using a json.loads() function the json list looks something like this:

listResult: {'Shawsank Redemption': [10, 'I love this movie so much'], 'Tropic Thunder': [9,'This was an awesome movie for sure'], 'Ted': [8, 'Hilarious throughout the entire movie']}

I have to return the highest rated movie, I'm assuming I have to use a for loop to find the max value but I'm unsure how to access just the rating value within the list

Answer 1

Assuming your dictionary has the name listResult (which you should change, it's not a list), use the built in max function and provide a custom key-function:

>>> listResult = {'Shawsank Redemption': [10, 'I love this movie so much'], 'Tropic Thunder': [9,'This was an awesome movie for sure'], 'Ted': [8, 'Hilarious throughout the entire movie']}
>>> max(listResult, key=lambda movie: listResult[movie][0])
'Shawsank Redemption'

The keyfunction is used to define the criteria by which the movie-names are ordered. For each movie, we're getting the first element of the corresponding list.

Answer 2

Here is how to access the rating part of the python list.

listResult = {'Movie': [10, "I love this Movie"]}

rating = listResult["Movie"][0]

print rating  // Prints 10

Then just compare each of the ratings to find the max one.