Cannot use profiles on windows

[OverlordQ]

When using the default profile, the shell works, but trying to specify a profile like aws-shell --profile dev results in:

Creating doc index in the background. It will be a few minutes before all documentation is available.
aws> ec2 describe-instances
Traceback (most recent call last):
  File "c:\python27\lib\runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "c:\python27\lib\runpy.py", line 72, in _run_code
    exec code in run_globals
  File "C:\Python27\Scripts\aws-shell.exe\__main__.py", line 9, in <module>
  File "c:\python27\lib\site-packages\awsshell\__init__.py", line 70, in main
    shell.run()
  File "c:\python27\lib\site-packages\awsshell\app.py", line 319, in run
    p = self._popen_cls(full_cmd, shell=True, env=self._env)
  File "c:\python27\lib\subprocess.py", line 710, in __init__
    errread, errwrite)
  File "c:\python27\lib\subprocess.py", line 958, in _execute_child
    startupinfo)
TypeError: environment can only contain strings

[joguSD]

How did you install the shell?

[OverlordQ]

Using PIP.

Tried upgrading dependencies: awscli-1.13.0 boto3-1.4.8 botocore-1.8.3

Still get same result.

The hacky fix is on awsshell\app.py:515 make it look like:

        self._env[str('AWS_DEFAULT_PROFILE')] = new_profile_name