[split] Single slash syntax in file path

[snippsat]

Your code is without indentation.
This is wrong,escape character will give errror.
s="C:\Users\alex.ogata\Desktop\test001"
For file path in Windows always use:

>>> s = r"C:\Users\alex.ogata\Desktop\test001"
>>> s
'C:\\Users\\alex.ogata\\Desktop\\test001'
>>> # or 
>>> s = "C:/Users/alex.ogata/Desktop/test001"
>>> s
'C:/Users/alex.ogata/Desktop/test001'
>>> # or 
>>> s = "C:\\Users\\alex.ogata\\Desktop\\test001"
>>> s
'C:\\Users\\alex.ogata\\Desktop\\test001'