Search "python raw encoding" for the history.
Or read my precise
/blogs/dan_patterson/2016/08/14/filenames-and-file-paths-in-python
In short... the options are listed but a little 'r' goes a long way.
folder = "c:\users\andre souza\tools\gis"
File "<ipython-input-35-6d2d90c647fc>", line 1
folder = "c:\users\andre souza\tools\gis"
^
SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \uXXXX escape
folder = r"c:\users\andre souza\tools\gis"
folder
'c:\\users\\andre souza\\tools\\gis'
folder = "C:\Temp\andre souza\tools\gis"
print(folder)
C:\Tempndre souza ools\gis
folder = r"C:\Temp\andre souza\tools\gis"
print(folder)
C:\Temp\andre souza\tools\gis