Python（Pandas） - 语法错误 - 语法无效 - writer.save（）

Question

我尝试使此代码有效，但它有错误：

for myname in mn:
    mydf = df.loc[df.Teacher_name == myname]
    mydf.to_excel(writer, sheet_name = myname)
writer.save()

  File "<stdin>", line 4
    writer.save()
         ^
SyntaxError: invalid syntax

进口=

import pandas as pd

writer =

writer = pd.ExcelWriter("MyData.xlsx", engine='xlsxwriter')

mn =

mn = df['name'].unique().tolist()

mn = ['Teacher A', 'Teacher B', 'Teacher C']

要使df使用此查询：

df = pd.read_csv('XXX.csv', names=['Teacher_name', 'Studen_name','Extra'])

df输出：

        Teacher_name      Student_name    Extra                                                    
1       Teacher A         Student 1       xxxx
2       Teacher A         Student 2       xxxx
3       Teacher B         Student 3       xxxx
4       Teacher C         Student 4       xxxx