美国人口普查数据预测收入并使用sklearn算法进行汇总：了解数据及进行数据预处理

    import pandas as pd
    import numpy as np
    import matplotlib.pyplot as plt
    import seaborn as sns
    sns.set_style('whitegrid')
    # plt.style.use('seaborn-whitegrid')
    %matplotlib inline
    import warnings
    warnings.filterwarnings('ignore')
    
    plt.rcParams['font.sans-serif'] = ['MicroSoft YaHei']
    plt.rcParams['axes.unicode_minus'] = False
    
    headers = ['age', 'workclass', 'fnlwgt', 'education', 'education-num', 'marital-status',