Hi,
I changed zipped file password to the new  string "RRJBB" that is a
combination after RRJBA to see what will happen.
At the  input combination KWFEA
I got the message:

KWFEA
Traceback (most recent call last):
  File "p33.py", line 54, in <module>
    zf.extractall( pwd=password.encode('cp850','replace'))
  File "/usr/lib/python3.5/zipfile.py", line 1347, in extractall
    self.extract(zipinfo, path, pwd)
  File "/usr/lib/python3.5/zipfile.py", line 1335, in extract
    return self._extract_member(member, path, pwd)
  File "/usr/lib/python3.5/zipfile.py", line 1399, in _extract_member
    shutil.copyfileobj(source, target)
  File "/usr/lib/python3.5/shutil.py", line 73, in copyfileobj
    buf = fsrc.read(length)
  File "/usr/lib/python3.5/zipfile.py", line 844, in read
    data = self._read1(n)
  File "/usr/lib/python3.5/zipfile.py", line 934, in _read1
    self._update_crc(data)
  File "/usr/lib/python3.5/zipfile.py", line 862, in _update_crc
    raise BadZipFile("Bad CRC-32 for file %r" % self.name)
zipfile.BadZipFile: Bad CRC-32 for file '11_02_2019B.pdf'

  Jozef

On Tue, Apr 9, 2019 at 1:05 PM Serhiy Storchaka <report@bugs.python.org>
wrote:

>
> Serhiy Storchaka <storchaka+cpython@gmail.com> added the comment:
>
> If you try to extract the file using an invalid password, it is an
> expected behavior.
>
> ----------
>
> _______________________________________
> Python tracker <report@bugs.python.org>
> <https://bugs.python.org/issue36573>
> _______________________________________
>