pivot table stack plot

pivot_table

df = pd.pivot_table(df2021,                
                     index = '월',    
                     columns = '품종',    
                     values = '물량(kg)',     
                     aggfunc = 'sum')   

stack bar plot

df.plot(kind="bar",stacked=True,figsize=(13,7),color=colors)      # stacked
plt.ticklabel_format(style='plain', axis='y',useOffset=False)
plt.legend(bbox_to_anchor = (1, 1), title = '품종') 
plt.title('월별 품종 거래량', fontsize=14)
plt.show()