python 自省(摘自 dive into python)

def info(object, spacing=10,collapse=1):
    """ print methos and doc strings.
    takes module,class,list,dictionary,or string. """

    methodList = [method for method in dir(object) if callable(getattr(object,method))]

    processFunc = collapse and (lambda s : "".join(s.split())) or (lambda s: s)

    print "\n".join(["%s %s" %(method.ljust(spacing),
                            processFunc(str(getattr(object,method).__doc__)))
                            for method in methodList ])

if __name__ == "__main__" :
    print info(dict)