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GeezerVison is showing mail.python.org — [Python-Dev] new draft of PEP 227 [Python-Dev] new draft of PEP 227Greg Ewing [email protected]Fri, 15 Dec 2000 12:58:24 +1300 (NZDT)
Paul Prescod <[email protected]>: > We could say that a local can only shadow a global > if the local is formally declared. How do you intend to enforce that? Seems like it would require a test on every assignment to a local, to make sure nobody has snuck in a new global since the function was compiled. > Actually, one could argue that there is no good reason to > even *allow* the shadowing of globals. If shadowing were completely disallowed, it would make it impossible to write a completely self-contained function whose source could be moved from one environment to another without danger of it breaking. I wouldn't like the language to have a characteristic like that. Greg Ewing, Computer Science Dept, +--------------------------------------+ University of Canterbury, | A citizen of NewZealandCorp, a | Christchurch, New Zealand | wholly-owned subsidiary of USA Inc. | [email protected] +--------------------------------------+
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