如何在 Python 中使用 pandas 制作这张表:
data = [['4/04/2023','地板','桌子','屋顶','油漆',''],['4/05/2023','','地板',' Tables','Roof','Paint'],['4/06/2023','Paint','','Floors','Tables','Roof'],['4/07/2023', '屋顶','油漆','','地板','桌子']]
df = pd.DataFrame(data, columns=['Date', 'Jim', 'Bob', 'Ed', 'James', 'Joe'])
我设法做到了,看看:
#let's create some initial data
data = [['4/04/2023','Floors','Tables','Roof','Paint',''],['4/05/2023','','Floors','Tables','Roof','Paint'],['4/06/2023','Paint','','Floors','Tables','Roof'],['4/07/2023','Roof','Paint','','Floors','Tables']]
df = pd.DataFrame(data, columns=['Date', 'Jim','Bob','Ed','James','Joe'])
#apply the transformations
df2 = df.melt(id_vars="Date", value_name='Items')
df3 = df2.pivot(index="Date", columns='Items', values='variable')
df3 = df3[["Floors","Tables","Roof", "Paint"]] #change the order