Excel file overwritten instead of concat - Python - Pandas

Question

I\'m trying to contact all excel files and worksheets in them into one using the below script. It kinda works but then the excel file c.xlsx is overwritten per file, so only

Answer 1

Idea is create list of DataFrames in list comprehension, but because working with orderdict is necessary concat in loop and then again concat for one big final DataFrame:

cdf = [pd.read_excel(excel_names, sheet_name=None, ignore_index=True).values() 
       for excel_names in glob.glob('files/*.xlsx')]

df = pd.concat([pd.concat(x) for x in cdf], ignore_index=True)
#print (df)

df.to_excel("c.xlsx", index=False)