计算皮尔逊相关系数

def solve():
    from sklearn.datasets import load_iris
    import matplotlib.pyplot as plt
    import numpy as np
    iris = load_iris()
    corr_matrix = np.corrcoef(____)
    print(____)
    print(____)
    plt.figure(figsize=(____, ____))
    im = plt.imshow(____)
    plt.colorbar(____)
    plt.xticks(range(____), ['____', '____', '____', '____'], rotation=____)
    plt.yticks(range(____), ['____', '____', '____', '____'])
    plt.title(____)
    for i in range(____):
        for j in range(____):
            plt.text(____)
    plt.tight_layout()
    plt.show()