1. 使用pandas

import pandas

file_name = "aaa.xlsx"
excel_total = pandas.ExcelFile(file_name)
sheet_names = excel_total.sheet_names

2. 使用openpyxl

import openpyxl

file_name = "aaa.xlsx"
excel_total = openpyxl.load_workbook(file_name)
sheet_names = excel_total.sheetnames