pd.ExcelWriter(to_excel)保存结果到已存在的excel文件中

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仅存单个excel表格就用df.to_excel更简单

pd.ExcelWriter保存结果到已存在的excel文件中，并支持多个sheet表格写入excel。

Python对excel更多功能编程需要安装openpyxl第三方包

Python代码如下

# -*- coding: utf-8 -*-
"""
Created on Sat Nov 30 13:24:28 2019

@author: 231469242@qq.com
"""
import numpy as np
import pandas as pd

df1 = pd.DataFrame({"name": ['Alfred', 'Batman', 'Catwoman'],
                   "toy": [np.nan, 'Batmobile', 'Bullwhip'],
                 "born": [pd.NaT, pd.Timestamp("1940-04-25"),
                           pd.NaT]})

df2 = pd.DataFrame({"name": ['Alfred', 'Jim', 'Catwoman'],
                   "toy": [np.nan, 'Batmobile', 'Bullwhip'],
                 "born": ['Greens',pd.Timestamp("1940-04-25"),
                           pd.NaT]})

with pd.ExcelWriter('result.xls') as writer:
    df1.to_excel(writer, sheet_name='sheet1')
    df2.to_excel(writer, sheet_name='sheet2')

#仅存单个excel表格就用to_excel更简单
df1.to_excel("result.xlsx")

　　

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