import json

with open("movies.json", "r", encoding="utf-8") as f:
    total_data = json.load(f)
movie_list = total_data["movies"]

# ① 最高分、最低分电影
max_movie = max(movie_list, key=lambda x: x["rating"])
min_movie = min(movie_list, key=lambda x: x["rating"])
print("评分最高电影：", max_movie["title"], "，评分：", max_movie["rating"])
print("评分最低电影：", min_movie["title"], "，评分：", min_movie["rating"])

# ② 统计各电影类型数量
genre_dict = {}
for m in movie_list:
    g_list = m["genre"].split(",")
    for g in g_list:
        g = g.strip()
        genre_dict[g] = genre_dict.get(g, 0) + 1
print("\n各类型电影数量：", genre_dict)

# ③ 统计各导演电影数量
director_dict = {}
for m in movie_list:
    name = m["director"]
    director_dict[name] = director_dict.get(name, 0) + 1
print("\n各导演电影数量：", director_dict)

# ④ 统计2020年（含）后上映影片
cnt = 0
for m in movie_list:
    if m["year"] >= 2020:
        cnt += 1
print("\n2020年（含）以后上映电影总数：", cnt)