线性约束检验

def solve():
    import pandas as pd
    import statsmodels.api as sm
    import matplotlib.pyplot as plt
    
    df = pd.read_csv(____)
    X = sm.add_constant(____)
    model = sm.OLS(____).fit()
    
    params = model.params.drop(____)
    
    plt.figure(figsize=(____,____))
    plt.bar(range(len(____)), params, color='____', alpha=____)
    plt.axhline(y=params.mean(), color='____', linestyle='____', linewidth=____, label='____')
    plt.xticks(range(len(____)), params.index)
    plt.title(____)
    plt.xlabel(____)
    plt.ylabel(____)
    plt.legend()
    plt.grid(____)
    plt.tight_layout()
    plt.show()
    
    f_test = model.f_test(____)
    print(round(float(____), ____))