箱线图：1978vs1985工资分布

def solve():
    import pandas as pd
    import matplotlib.pyplot as plt
    url = '____'
    df = pd.read_csv(____)
    w78 = df[df['____']==____]['____']; w85 = df[df['____']==____]['____']
    print(____)
    plt.boxplot(____)
    plt.ylabel(____); plt.title(____); plt.tight_layout(); plt.show()