marrow/marrow.script — Issue #4: Display subcommand list if given subcommand is wrong.
Author: amcgregor
Created: 2011-10-19 15:47:34+00:00
State: open

Currently, you get an exception like:

```
# bb-facebook-users crete -h
Traceback (most recent call last):
File "example", line 9, in
load_entry_point('example==0.1', 'console_scripts', 'example')()
File ".../example.py", line 13, in execute
sys.exit(Parser(obj)(sys.argv[1:]))
File ".../marrow/script/core.py", line 88, in __call__
sub = getattr(obj, name)
AttributeError: 'Example' object has no attribute 'crete'
```