文章目录数据读取数据整理PeriodIndex函数—-时间段优化
数据来源: https://www.kaggle.com/uciml/pm25-data-for-five-chinese-cities
数据读取
from matplotlib import font_manager
from matplotlib import pyplot as plt
import pandas as pd
file_path = "./BeijingPM2.5.csv"
df = pd.read_csv(