SyntaxWarning: invalid escape sequence '\.'

[nerun]

Both po2dsk and dsk2po has invalid escape sequences:

$ ./po2dsk.py test.po 
/home/nerun/Downloads/./po2dsk.py:34: SyntaxWarning: invalid escape sequence '\.'
  dskfilename = re.sub('\.po$', '', filenameIn, flags=re.IGNORECASE) + ".dsk"
/home/nerun/Downloads/dsk2po.py:31: SyntaxWarning: invalid escape sequence '\.'
  pofilename = re.sub('\.dsk$', '', dskfilename, flags=re.IGNORECASE) + ".po"
po2dsk - convert po files to dsk files
Writing dsk image to test.dsk

Easy to fix:

• po2dsk, line 34: change \.po$ to \\.po$
• dsk2po, line 31: change \.dsk$ to \\.dsk$

I am running Python version 3.12.4.