当我调用行时元组索引类型错误

如何解决当我调用行时元组索引类型错误

我正在使用 folium 并连接了 postgresql 数据库，但我有

类型错误：元组索引必须是整数或切片，而不是 str

import numpy as np
np.random.seed(123)
a = np.random.randint(50,size=(100,2))

def collect(coord,sigma: float =3.0):
    """ create a small collection of points in a neighborhood of some point 
    """
    neighborhood = []
    
    x=coord[0]
    y=coord[1]

    X = int(sigma)
    for i in range(-X,X + 1):
        Y = int(pow(sigma * sigma - i * i,1/2))
        for j in range(-Y,Y + 1):
            neighborhood.append((x + i,y + j))

    return neighborhood

rad = 10
coord_list = [collect(coord,rad) for coord in a]
coord_set = np.array(list(set([val for sublist in coord_list for val in sublist])))

from scipy.spatial import distance

dists = distance.cdist(coord_set,a).min(axis=1)