Iris散点图可视化

def solve():
    import pandas as pd
    import matplotlib.pyplot as plt
    df = pd.read_csv(____)
    colors = {"____": "____", "____": "____", "____": "____"}
    for sp in sorted(df["____"].unique()):
        sub = df[df["____"] == sp]
        plt.scatter(____)
    plt.xlabel(____); plt.ylabel(____); plt.legend(); plt.title(____)
    plt.show()
    means = df.groupby(____)["____"].mean().sort_index()
    print("____".join(____))