from matplotlib import pyplot as plt
plt.rcParams['font.family'] = 'Noto Sans CJK JP'
plt.rcParams['axes.unicode_minus'] = False
plt.figure()
plt.subplot(1,1,1)
x=[0,1,2,3,4]
y=[3,7,5,9,4]
plt.ylabel('Y_LABEL')
plt.xlabel('X_LABEL')
plt.title('Matlib_案例')
plt.plot(x,y)
plt.show()

import pandas as pd
df1 = pd.read_excel(r'./fin_databak.xlsx',sheet_name=0,converters={'年':str,'公司':str})
monthdict={'Jan':'01','Feb':'02','Mar':'03','Apr':'04','May':'05','Jun':'06','Jul':'07','Aug':'08','Sep':'09','Oct':'10','Nov':'11','Dec':'12'}
df1