import json
import matplotlib.pyplot as plt

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

genre_count = {}
for movie in movies:
    genre = movie["genre"]
    if genre in genre_count:
        genre_count[genre] += 1
    else:
        genre_count[genre] = 1
genres = list(genre_count.keys())
counts = list(genre_count.values())
plt.figure(figsize=(8, 5))
plt.bar(genres, counts)
plt.xlabel("类型名称")
plt.ylabel("电影数量")
plt.title("类型电影数量分布")
plt.savefig("q4_1_bar.png", dpi=150, bbox_inches="tight")

plt.show()