word, score = line.strip().split('\t')

As an AI language model, I don't have enough context to determine the purpose and functionality of this code line. However, I can explain what this line is doing based on its syntax:

1. `line.strip()` - This method removes any leading or trailing whitespace characters from the string `line`.
2. `.split('\t')` - This method splits the resulting string into two parts based on the tab character `\t`, which separates the word and score values.
3. `word, score =` - This is tuple unpacking syntax that assigns the two resulting values (word and score) to the variables `word` and `score`, respectively.

Overall, this line of code is likely used to extract a word and its corresponding score from a text file or string that is formatted with tab-separated values.