限定符 [0][1] 有什么作用？

Question

请考虑下面编译运行的代码

import numpy as np

tgt = np.array([3,5,8,10,12,15])

num_guesses = 10
results =[]

for g in range(num_guesses):
    guess = np.random.uniform(low = tgt.min(), high = tgt.max())
    total_dist = np.sum((tgt-guess)**2)
    results.append((total_dist, guess))

best_guess = sorted(results)[0][1]

print(best_guess)

有人可以解释限定符 [0][1] 是如何得出 best_guess 结果的吗？谢谢

Answer 1

results is a list of tuples. [0][1] takes the second tuple index of the first row of the sorted results.

-- comment by deceze ♦

限定符 [0][1] 有什么作用？

What do the qualifiers [0][1] do?

python

built-in