外貌评分工资箱线图（统计图表）

def solve():
    import pandas as pd
    import matplotlib.pyplot as plt
    import numpy as np
    
    url = 'https://liangdaima.com/static/data/wooldridge/beauty.csv'
    df = pd.read_csv(url)
    
    below = df[df['belavg']==1]['wage']
    above = df[df['belavg']==0]['wage']
    plt.figure(figsize=(8,6))
    plt.boxplot([below, above], labels=['低于平均', '高于平均'], patch_artist=True, boxprops=dict(facecolor='lightblue'))
    plt.title('不同外貌水平工资箱线图', fontsize=14)
    plt.ylabel('工资', fontsize=12)
    plt.grid(axis='y', alpha=0.3)
    plt.tight_layout()
    plt.show()
    return "可视化代码执行完成"