列表索引超出范围时未超出列表

Question

有谁知道为什么我的列表索引超出此代码的范围？ len（）是380，但在10之后停止打印。谢谢

from urllib.request import urlopen
from urllib.error import HTTPError
from urllib.error import URLError
import json

team_id = ['ARS','BOU','BHA','BUR','CHE','CRY','EVE','HUD','LEI','LIV','MCI','MUN','NEW','SOU','STK','SWA','TOT','WAT','WBA','WHU']

i=0
while i <= len(fixture)-1: 
    try:
        htmlfixture = urlopen("https://fantasy.premierleague.com/drf/fixtures/" + str(i)).read()
        fixture = json.loads(htmlfixture)
    except HTTPError as e:
        print(e)
    except URLError as e:
        print("the server could not be found!")
    else:    
        print(fixture[i])
        print(type(fixture))
        fixture = fixture[i]
        id = fixture['id']
        team_a = team_id[fixture['team_a']]
        print(team_a)
        team_h = team_id[fixture['team_h']]
        print(team_h)
    i = i+1