[Tutor] Law of Demeter example request

[Timothy Wilson]

Hi everyone,

I'm looking over the early version of Bruce Eckel's _Thinking in Python_
and I've got a question about the Law of Demeter, or as Bruce puts it,
"Don't talk to strangers."

I *think* I get it, but it would be great if someone would post a brief
example illustrating the concept. Preferably, the example should show
the same short program in two versions, one obeying the law and 2nd
ignoring it.

-Tim

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