#### Combine, concatenate, join multiple excel files in a given folder into one dataframe, Each excel files having multiple sheets #### All sheets in a single Excel code example

Example: how to combine number of excel files into a single file using python or pandas

import os
import pandas as pd
cwd = os.path.abspath('') 
files = os.listdir(cwd)  
df = pd.DataFrame()
for file in files:
    if file.endswith('.xlsx'):
        df = df.append(pd.read_excel(file), ignore_index=True) 
df.head() 
df.to_excel('total_sales.xlsx')