human
Write me a the Python program you requested given the following:
Complete the below
def dump(node):

    ''''A very verbose representation of the node passed.  This is useful for
    debugging purposes.'
    '''
assistant
#Here is the Python program you requested.
    def _format(node):
        if isinstance(node, AST):
            return ('%s(%s)' % (node.__class__.__name__, ',    '.join((('%s=%s' % (a, _format(b))) for (a, b) in iter_fields(node)))))
        elif isinstance(node, list):
            return ('[%s]' % ',    '.join((_format(x) for x in node)))
        return repr(node)
    if (not isinstance(node, AST)):
        raise TypeError(('expected    AST,    got    %r' % node.__class__.__name__))
    return _format(node)