Python之Pandas绘图，设置显示中文问题

# -*- coding: utf-8 -*-

# author：baoshan

import pandas as pd

import matplotlib.pyplot as plt

plt.rcParams['font.sans-serif'] = ['SimHei']

plt.rcParams['axes.unicode_minus'] = False

def main():

    aqi_data = pd.read_csv('china_city_aqi_teacher.csv')

    print('基本信息:')

    print(aqi_data.info())

    print('数据预览')

    print(aqi_data.head())

    # 数据清洗

    # 只保留AQI＞0的数据

    filter_contation = aqi_data['AQI'] > 0

    clean_data = aqi_data[filter_contation]

    # 基本统计

    print('AQI最大值', clean_data['AQI'].max())

    print('AQI最小值', clean_data['AQI'].min())

    print('AQI均值', clean_data['AQI'].mean())

    # top50

    top50_cities = clean_data.sort_values(by=['AQI'], ascending=True).head(10)

    print('空气质量最好的十个城市')

    top50_cities.plot(kind='line', x='City', y='AQI', title='空气质量最好的50个城市', figsize=(20,10))

    plt.savefig('top50_aqi_line.png')

    top50_cities.plot(kind='bar', x='City', y='AQI', title='空气质量最好的50个城市', figsize=(20, 10))

    plt.savefig('top50_aqi_bar.png')

    plt.show()

if __name__ == '__main__':

    main()

pandas内置matplotlib绘图更简单。