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  3. Introduction to MongoDB in Python

Exercise

Born and affiliated

Some countries are, for one or more laureates, both their country of birth ("bornCountry") and a country of affiliation for one or more of their prizes ("prizes.affiliations.country"). You will find the five countries of birth with the highest counts of such laureates.

Instructions

100 XP
  • Create an index on country of birth ("bornCountry") for db.laureates to ensure efficient gathering of distinct values and counting of documents
  • Complete the skeleton dictionary comprehension to construct n_born_and_affiliated, the count of laureates as described above for each distinct country of birth. For each call to count_documents, ensure that you use the value of country to filter documents properly.