<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def load_commands(self, obj):
 """ Load commands defined on an arbitrary object. All functions decorated with the :func:`subparse.command` decorator attached the specified object will be loaded. The object may be a dictionary, an arbitrary python object, or a dotted path. The dotted path may be absolute, or relative to the current package by specifying a leading '.' (e.g. ``'.commands'``). """

        if isinstance(obj, str):
            if obj.startswith('.') or obj.startswith(':'):
                package = caller_package()
                if obj in ['.', ':']:
                    obj = package.__name__
                else:
                    obj = package.__name__ + obj
            obj = pkg_resources.EntryPoint.parse('x=%s' % obj).resolve()
        command.discover_and_call(obj, self.command)