matplotlib中文字体设置

 ========== 自动检测中文字体 ==========
def setup_chinese_font():
    """自动检测并设置可用的中文字体"""
    chinese_fonts = ["Microsoft YaHei", "FangSong", "KaiTi", "SimHei", "SimSun"]

    found_font = None
    for font in chinese_fonts:
        try:
            if findfont(FontProperties(family=[font])) not in ['', None]:
                found_font = font
                break
        except:
            continue

    if found_font:
        plt.rcParams['font.sans-serif'] = [found_font]
        plt.rcParams['axes.unicode_minus'] = False  # 解决负号显示问题
        print(f"✅ 使用中文字体: {found_font}")
    else:
        print("⚠️ 未找到可用中文字体，请手动安装 SimHei.ttf 或指定字体路径。")


# 初始化中文字体
setup_chinese_font()