正态分布工资分布图

def solve():
    import pandas as pd
    import numpy as np
    import matplotlib.pyplot as plt
    from scipy import stats
    url = '____'
    df = pd.read_csv(____)
    mu, sig = df['____'].mean(), df['____'].std()
    print(____)
    x = np.linspace(____,____,____)
    plt.hist(____)
    plt.plot(x, stats.norm.pdf(____), '____', lw=____, label='____')
    plt.legend(); plt.tight_layout(); plt.show()