python pandas向已有excel添加新表sheet/添加数据

python pandas向已有excel添加新表sheet/添加行数据

import pandas as pd
from openpyxl import load_workbook

writer = pd.ExcelWriter(excel_name,engine='openpyxl')# pylint: disable=abstract-class-instantiated
one_img_info = ['file', 1]
one_img_info = pd.DataFrame(one_img_info)
# 创建新excel
if not os.path.exists(excel_name):
    one_img_info.to_excel(writer, sheet_name=dir_i, index = False)
else:
	# 1.向已有excel创建新sheet
    book = load_workbook(excel_name)
    writer.book = book
    one_img_info.to_excel(writer, sheet_name=dir_i, index = False)
    # 2.向已有excel添加新行(注释上面三行)
    # df= pd.DataFrame(pd.read_excel(excel_name,sheet_name=dir_i), index=None) 
    # out_df = pd.concat([df,one_img_info],axis=0)
    # out_df.to_excel(writer, sheet_name=dir_i, index = False)
writer.save()
writer.close()