Breaking change in unpinned pyperclip dependency

[finnigja]

On trying to import a new cmd2 install on a Ubuntu system where pyperclip cannot access the clipboard (triggering the failure path in https://github.com/python-cmd2/cmd2/blob/master/cmd2.py#L326), I'm getting the following traceback:

  File "[snip]/__init__.py", line 9, in <module>
    from cmd2 import Cmd
  File "/home/ubuntu/virtualenvs/venv-2.7.10/lib/python2.7/site-packages/cmd2.py", line 333, in <module>
    except pyperclip.exceptions.PyperclipException:
AttributeError: 'module' object has no attribute 'exceptions'

It seems cmd2's unpinned pyperclip dependency is pulling in a breaking-change pyperclip release from yesterday. In asweigart/pyperclip@df268c1, pyperclip was restructured into a single file meaning pyperclip.exceptions.PyperclipException no longer resolves.

[tleonhardt]

@chair6 Thanks for bringing this to our attention. We will work on a fix for it shortly.

[tleonhardt]

@chair6 This issue has been fixed in cmd2 version 0.7.8, which has been released and is available now from PyPI

[finnigja]

Thanks, @tleonhardt!! The quick turnaround is greatly appreciated...