贝叶斯定理

def solve():
    import pandas as pd
    import matplotlib.pyplot as plt
    url = '____'
    df = pd.read_csv(____)
    n = len(____)
    p_f = (____).sum()/n
    p_sf = df[df['____']=='____']['____'].mean()
    p_sm = df[df['____']=='____']['____'].mean()
    p_s = p_sf*p_f + p_sm*(____-p_f)
    result = round(____)
    print(____)
    labels = ['____','____','____','____']
    values = [p_f, p_sf, p_s, result]
    plt.bar(____)
    plt.ylabel(____); plt.title(____); plt.xticks(____)
    plt.tight_layout(); plt.show()