read all excel using glob
import sys
import csv
import glob
import pandas as pd
# get data file names
path =r'C:\DRO\DCL_rawdata_files\excelfiles'
filenames = glob.glob(path + "/*.xlsx")
dfs = []
for df in dfs:
xl_file = pd.ExcelFile(filenames)
df=xl_file.parse('Sheet1')
dfs.concat(df, ignore_index=True)