On Sunday, June 24, 2012 1:07:45 AM UTC-7, Peter Otten wrote: > > You cannot access a class instance because even the class itself doesn't > exist yet. You could get hold of the class namespace with sys._getframe(), > > def add_help(f): > exec """\ > def help_%s(self): > f = getattr(self, %r) > self.show_help(f) > """ % (f.__name__[3:], f.__name__) in sys._getframe(1).f_locals > return f > > but here's a simpler approach: > > import cmd > > def add_help(f): > def help(self): > self.show_help(f) > f.help = help > return f > > > class BaseCmd(cmd.Cmd): > def __init__(self, *args, **kwargs): > cmd.Cmd.__init__(self, *args, **kwargs) > > def show_help(self, func): > print "\n".join((line.strip() for line in > func.__doc__.splitlines())) > > def __getattr__(self, name): > if name.startswith("help_"): > helpfunc = getattr(self, "do_" + name[5:]).help > setattr(self.__class__, name, helpfunc) > return getattr(self, name) > raise AttributeError > > @add_help > def do_done(self, line): > """done > Quits this and goes to higher level or quits the application. > I mean, what else do you expect? > """ > return True > > if __name__=='__main__': > c = BaseCmd() > c.cmdloop()
Okay. If I understand this, you are adding a help attribute to the class method. The help attribute is itself a function. There is nothing in the documentation (that I have found) that points to this solution. Even after reading the do_help method in the cmd.Cmd source, I don't see this as working. Yet it works. How? -- http://mail.python.org/mailman/listinfo/python-list