What is the purpose of the nested list comprehension in creating the 'temps' variable?

The purpose of the nested list comprehension in creating the 'temps' variable is to create a list that effectively tracks daily temperatures for each of the 31 days. In a nested list comprehension, multiple loops are used to create a two-dimensional structure, which is ideal for representing data that has, in this case, multiple entries per day (like hourly temperatures) over a month.

This allows for a clear and organized way to store temperature data indexed by both day and hour. The first level of the comprehension usually iterates over the days of the month, while the inner loop can iterate over the hours within each day. As a result, the structure makes it easy to access all temperature readings, whether one is interested in just one specific day's data or the entire month's data.

While the other options suggest different functionalities, they do not accurately capture the primary purpose of such a structure. For instance, initializing a list for each hour, summing temperatures, or generating forecasts would imply different structures or operations than simply tracking daily temperatures for the whole month.