Exception when invoking `help(iota)` in examples/shell.py

[todofixthis]

1. Launch examples/shell.py.
2. Type help(iota).

In [3]: help(iota)
---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
pyota/iota/api.py in __getattr__(self, command)
     97     try:
---> 98       command_class = self.commands[command]
     99     except KeyError:

KeyError: '__name__'

During handling of the above exception, another exception occurred:

InvalidCommand                            Traceback (most recent call last)
pyota/examples/shell.py in <module>()
----> 1 help(iota)

python3.6/site.py in __call__(self, *args, **kwds)
    503     def __call__(self, *args, **kwds):
    504         import pydoc
--> 505         return pydoc.help(*args, **kwds)
    506
    507 def sethelper():

python3.6/pydoc.py in __call__(self, request)
   1856     def __call__(self, request=_GoInteractive):
   1857         if request is not self._GoInteractive:
-> 1858             self.help(request)
   1859         else:
   1860             self.intro()

python3.6/pydoc.py in help(self, request)
   1909             else: doc(str, 'Help on %s:', output=self._output)
   1910         elif isinstance(request, Helper): self()
-> 1911         else: doc(request, 'Help on %s:', output=self._output)
   1912         self.output.write('\n')
   1913

python3.6/pydoc.py in doc(thing, title, forceload, output)
   1643     try:
   1644         if output is None:
-> 1645             pager(render_doc(thing, title, forceload))
   1646         else:
   1647             output.write(render_doc(thing, title, forceload, plaintext))

python3.6/pydoc.py in render_doc(thing, title, forceload, renderer)
   1618     if renderer is None:
   1619         renderer = text
-> 1620     object, name = resolve(thing, forceload)
   1621     desc = describe(object)
   1622     module = inspect.getmodule(object)

python3.6/pydoc.py in resolve(thing, forceload)
   1610         return object, thing
   1611     else:
-> 1612         name = getattr(thing, '__name__', None)
   1613         return thing, name if isinstance(name, str) else None
   1614

pyota/iota/api.py in __getattr__(self, command)
    101         '{cls} does not support {command!r} command.'.format(
    102           cls     = type(self).__name__,
--> 103           command = command,
    104         ),
    105       )

InvalidCommand: Iota does not support '__name__' command.

[todofixthis]

Scheduled for release: v1.2.0