Last caracter of a string truncated issue when working from the end of the string

Last caracter of a string truncated issue when working from the end of the string - Printable Version

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Last caracter of a string truncated issue when working from the end of the string - Teknohead23 - Oct-03-2021

Hello, can someone please explain why when I select a range starting from the end of a string it truncates the last character?
I can work from the front end as variable dst will always be the same length but when faced with an unknown string length it would be an issue

dst = (r"C:\Users\tekno\Documents\Client Drawings\AAA001")
dwg_name = (dst[-7:-1])
print(dst)
print(dwg_name)
print(dst[40:47])
print(dst[-7:-1])
print(dst[-1])

Output:C:\Users\tekno\Documents\Client Drawings\AAA001
\AAA00
\AAA001
\AAA00
1

RE: Last caracter of a string truncated issue when working from the end of the string - deanhystad - Oct-03-2021

Why the parenthesis in the first two lines? They do nothing.

Slices work just like the for loop. They start at the start and end just before the end. To slice all the way to the end don't specify an end.

dwg_name = dst[-7:]

Same goes for slicing from the start.

dwg_name = dst[:7]

RE: Last caracter of a string truncated issue when working from the end of the string - Yoriz - Oct-03-2021

Rather than [-7:-1] to go to the end [-7:] -7 and the rest.

dst = (r"C:\Users\tekno\Documents\Client Drawings\AAA001")
dwg_name = dst[-7:]
print(dst)
print(dwg_name)

Output:C:\Users\tekno\Documents\Client Drawings\AAA001
\AAA001

RE: Last caracter of a string truncated issue when working from the end of the string - snippsat - Oct-03-2021

Use pathlib then it become much more flexible.

>>> import pathlib
>>> 
>>> dst = r"C:\Users\tekno\Documents\Client Drawings\AAA001"
>>> folder_last = pathlib.PurePath(dst).name
>>> folder_last
'AAA001'
>>> 
>>> # Join would be
>>> my_path = pathlib.Path('C:\\')
>>> my_path.joinpath(folder_last)
WindowsPath('C:/AAA001')
>>> pathlib.Path.home().joinpath(folder_last)
WindowsPath('C:/Users/Tom/AAA001')