documentation is wrong for exec()

[Skaperen]

MCVE? i don't know what that means.

here is a simple demo:

Output:
lt2a/forums /home/forums 45> py3
Python 3.6.8 (default, Jan 14 2019, 11:02:34) 
[GCC 8.0.1 20180414 (experimental) [trunk revision 259383]] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> a='print(repr((a,b,c,d,e,f)))\n'
>>> b='print(repr((a,b,c,d,e,f)))\r'
>>> c='print(repr((a,b,c,d,e,f)))\r\n'
>>> d=b'print(repr((a,b,c,d,e,f)))\n'
>>> e=b'print(repr((a,b,c,d,e,f)))\r'
>>> f=b'print(repr((a,b,c,d,e,f)))\r\n'
>>> exec(a)
('print(repr((a,b,c,d,e,f)))\n', 'print(repr((a,b,c,d,e,f)))\r', 'print(repr((a,b,c,d,e,f)))\r\n', b'print(repr((a,b,c,d,e,f)))\n', b'print(repr((a,b,c,d,e,f)))\r', b'print(repr((a,b,c,d,e,f)))\r\n')
>>> exec(b)
('print(repr((a,b,c,d,e,f)))\n', 'print(repr((a,b,c,d,e,f)))\r', 'print(repr((a,b,c,d,e,f)))\r\n', b'print(repr((a,b,c,d,e,f)))\n', b'print(repr((a,b,c,d,e,f)))\r', b'print(repr((a,b,c,d,e,f)))\r\n')
>>> exec(c)
('print(repr((a,b,c,d,e,f)))\n', 'print(repr((a,b,c,d,e,f)))\r', 'print(repr((a,b,c,d,e,f)))\r\n', b'print(repr((a,b,c,d,e,f)))\n', b'print(repr((a,b,c,d,e,f)))\r', b'print(repr((a,b,c,d,e,f)))\r\n')
>>> exec(d)
('print(repr((a,b,c,d,e,f)))\n', 'print(repr((a,b,c,d,e,f)))\r', 'print(repr((a,b,c,d,e,f)))\r\n', b'print(repr((a,b,c,d,e,f)))\n', b'print(repr((a,b,c,d,e,f)))\r', b'print(repr((a,b,c,d,e,f)))\r\n')
>>> exec(e)
('print(repr((a,b,c,d,e,f)))\n', 'print(repr((a,b,c,d,e,f)))\r', 'print(repr((a,b,c,d,e,f)))\r\n', b'print(repr((a,b,c,d,e,f)))\n', b'print(repr((a,b,c,d,e,f)))\r', b'print(repr((a,b,c,d,e,f)))\r\n')
>>> exec(f)
('print(repr((a,b,c,d,e,f)))\n', 'print(repr((a,b,c,d,e,f)))\r', 'print(repr((a,b,c,d,e,f)))\r\n', b'print(repr((a,b,c,d,e,f)))\n', b'print(repr((a,b,c,d,e,f)))\r', b'print(repr((a,b,c,d,e,f)))\r\n')
>>>