Re: Single underscore in interactive mode

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From	Lie Ryan <lie.1296@gmail.com>
Subject	Re: Single underscore in interactive mode
Date	Wed, 25 Jun 2014 19:57:23 +0100
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On 25/06/14 16:20, candide wrote:

> As explained by the docs, an assignment statement_evaluates_  the expression on the right hand side. So we can deduce that at the very beginning of the 2nd prompt, "the result of the last evaluation" is 43. Nevertheless, calling _ raises a NameError exception!

Only expression can be evaluated, statements are executed. The shell 
cannot see beyond the immediate statement.

The documentation for sys.displayhook() describes that None as a special 
case is neither printed nor stored in `__builtins__._`.

Thread

Single underscore in interactive mode candide <c.candide@laposte.net> - 2014-06-25 08:20 -0700
  Re: Single underscore in interactive mode Robert Kern <robert.kern@gmail.com> - 2014-06-25 18:53 +0100
  Re: Single underscore in interactive mode Terry Reedy <tjreedy@udel.edu> - 2014-06-25 14:30 -0400
    Re: Single underscore in interactive mode candide <c.candide@laposte.net> - 2014-06-25 12:39 -0700
  Re: Single underscore in interactive mode Lie Ryan <lie.1296@gmail.com> - 2014-06-25 19:57 +0100
  Re: Single underscore in interactive mode Dave Angel <davea@davea.name> - 2014-06-25 17:56 -0400

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