User defined lexical scoping... can I do this?

Newsgroups	comp.lang.python
Date	2012-09-18 13:10 -0700
Message-ID	<d9aec95e-aedb-442d-ab6d-320f43f61b93@googlegroups.com> (permalink)
Subject	User defined lexical scoping... can I do this?
From	porkfried <weissman.mark@gmail.com>

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I want to define a 'with' command that makes entries
in dictionary available within the local scope, and
stores new local variables into that dictionary.  The
original scope should be restored on exit, and called
functions should not see anything special.  Can I do this?

my_dict = dict(a=1, b=2)
with MyScope(my_dict):
    print "A", a, "B", b
    x = 3
print my_dict["x"]
print x # FAIL, unbound

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User defined lexical scoping... can I do this? porkfried <weissman.mark@gmail.com> - 2012-09-18 13:10 -0700
  Re: User defined lexical scoping... can I do this? Thomas Jollans <t@jollybox.de> - 2012-09-18 22:31 +0200
  Re: User defined lexical scoping... can I do this? weissman.mark@gmail.com - 2012-09-18 13:50 -0700
    Re: User defined lexical scoping... can I do this? Thomas Jollans <t@jollybox.de> - 2012-09-18 23:51 +0200
    Re: User defined lexical scoping... can I do this? Terry Reedy <tjreedy@udel.edu> - 2012-09-18 21:38 -0400
      Re: User defined lexical scoping... can I do this? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-09-19 04:03 +0000
  Re: User defined lexical scoping... can I do this? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-09-19 00:47 +0100

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