How can I loop through all the xls files in a folder to find the sheet names, and then replace them - excel

Question

I am trying to loop through all the XLS files in a folder, and then replace the worksheet name by another string. This has to be done for all the files inside.
I am relatively new to programming, and here is my Python code. It runs okay (partially, when I do it for one file at a time), however, I am unable to get it to work for all the files in the folder.
from xlutils.copy import copy
from xlrd import open_workbook
# open the file
direc = input('Enter file name: ')
rb = open_workbook(direc)
wb = copy(rb)
#index of a sheet
pointSheet = rb.sheet_names()
print(pointSheet)
idx = pointSheet.index(pointSheet)
wb.get_sheet(idx).name = u'RenamedSheet1'
wb.save(direc)
Error message:
Traceback (most recent call last):
File "./Rename.py", line 13, in <module>
idx = pointSheet.index(pointSheet)
ValueError: ['x xxx xxxx xxxxxx'] is not in list
My bad! The above code is for testing with a single file. Here is the loop:
files = []
for dirname, dirnames, filenames in os.walk('D:\Temp\Final'):
# print path to all subdirectories first.
for subdirname in dirnames:
files.append(os.path.join(dirname, subdirname))
# print path to all filenames.
for filename in filenames:
files.append(os.path.join(dirname, filename))
pprint(files)
for i in range(0,len(files)):
rb = open_workbook(files[i])
wb = copy(rb)
idx = rb.sheet_names().index('5 new bulk rename')
wb.get_sheet(idx).name = u'RenamedSheet1'
wb.save(files[i])
print('Operation succeeded!')

Answer 1

Try something like this (untested) for a single file:
from xlutils.copy import copy
from xlrd import open_workbook
# open the file
direc = input('Enter file name: ')
rb = open_workbook(direc)
wb = copy(rb)
for pointSheet in rb.sheet_names()
print(pointSheet)
idx = pointSheet.index(pointSheet)
wb.get_sheet(idx).name = u'RenamedSheet1'
wb.save(direc)
And wrap that in another loop using listdir (taken from here):
import os
for file in os.listdir("/mydir"):
if file.endswith(".xls"):
# <do what you did for a single file>