Possible bug: OutputWrapper: TypeError: write() argument must be str, not bytes

Hello all!
I'm new to the list and mostly new to Django.

I am adding django-encrypted-model-fields to my Django project and one of the steps to install it is to generate a key using a ./manage.py command:

$ ./manage.py generate_encryption_key

When executing it, an error is raised:

Traceback (most recent call last):

  File "./manage.py", line 22, in <module>

    execute_from_command_line(sys.argv)

  File "/usr/local/lib/python3.6/site-packages/django/core/management/__init__.py", line 371, in execute_from_command_line

    utility.execute()

  File "/usr/local/lib/python3.6/site-packages/django/core/management/__init__.py", line 365, in execute

    self.fetch_command(subcommand).run_from_argv(self.argv)

  File "/usr/local/lib/python3.6/site-packages/django/core/management/base.py", line 288, in run_from_argv

    self.execute(*args, **cmd_options)

  File "/usr/local/lib/python3.6/site-packages/django/core/management/base.py", line 335, in execute

    output = self.handle(*args, **options)

  File "/usr/local/lib/python3.6/site-packages/encrypted_model_fields/management/commands/generate_encryption_key.py", line 15, in handle

    self.stdout.write(key, ending=b'\n')

  File "/usr/local/lib/python3.6/site-packages/django/core/management/base.py", line 106, in write

    self._out.write(style_func(msg))

TypeError: write() argument must be str, not bytes

I have found a workaround for this, decoding output before writing to stdout, on django/core/management/base.py, line 106:

$ diff django/core/management/base.py-original django/core/management/base.py

106c106

<         self._out.write(style_func(msg))

---

>         self._out.write(style_func(msg).decode(self._out.encoding))

Do I have to do a pull request to Django or try to debug django-encrypted-model-fields and talk to their developers?

Thanks in advance!
em and best regardsi

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