PCA 2D可视化

def solve():
    import pandas as pd
    import matplotlib.pyplot as plt
    from sklearn.preprocessing import StandardScaler
    from sklearn.decomposition import PCA
    df = pd.read_csv(____)
    X = df.drop(____); y = df["____"]
    X_s = StandardScaler().fit_transform(____)
    pca = PCA(____)
    X_pca = pca.fit_transform(____)
    plt.scatter(____)
    plt.xlabel(____); plt.ylabel(____); plt.title(____)
    plt.colorbar(____); plt.show()
    print(____)