卡方检验性别与舱级独立性

def solve():
    import pandas as pd
    import matplotlib.pyplot as plt
    from scipy.stats import chi2_contingency
    url = '____'
    df = pd.read_csv(____)
    ct = pd.crosstab(____)
    chi2, p, dof, _ = chi2_contingency(____)
    print(____)
    print(____)
    plt.imshow(____)
    plt.xticks(range(len(____)), ct.columns)
    plt.yticks(range(len(____)), ct.index)
    plt.colorbar(____); plt.title(____); plt.tight_layout(); plt.show()