Implements sage.misc.misc.inject_variable(name, value)

[nthiery]

From the doc:

    inject a variable into the main global namespace

    INPUT:
     - name  - a string
     - value - anything

    EXAMPLES::

        sage: from sage.misc.misc import inject_variable
        sage: inject_variable("a", 314)
        sage: a
        314

This will be used in the upcoming "inject_shorthands" patch for symmetric functions #7777, and could be used in the various inject_variable code instead of manipulating directly globals() (which could be incorrect if not called directly from the interpreter/notebook.

CC: @sagetrac-sage-combinat

Component: user interface

Author: Nicolas M. Thiéry

Reviewer: Mike Hansen

Merged: sage-4.3.1.rc0

Issue created by migration from https://trac.sagemath.org/ticket/7776

[nthiery]

Description changed:

--- 
+++ 
@@ -1,10 +1,11 @@
 From the doc:
 
+```
     inject a variable into the main global namespace
 
     INPUT:
-- name  - a string
-- value - anything
+     - name  - a string
+     - value - anything
 
     EXAMPLES::
 
@@ -12,6 +13,7 @@
         sage: inject_variable("a", 314)
         sage: a
         314
+```
 
-This will be used in the upcoming "inject_shorthands" patch for symmetric functions, and could be used in the various inject_variable code instead of manipulating directly globals() (which could be incorrect if not called directly from the interpreter/notebook.
+This will be used in the upcoming "inject_shorthands" patch for symmetric functions #7777, and could be used in the various inject_variable code instead of manipulating directly globals() (which could be incorrect if not called directly from the interpreter/notebook.
 

[nthiery]

comment:2

(note: patch prepared and tested on 4.2 not 4.3)

[robertwb]

comment:3

I'd rather it looked for __name__ == '__main__' than wiki_create_instance.

[nthiery]

Attachment: trac_7776-inject_variable-nt.patch.gz

[nthiery]

comment:4

Replying to @robertwb:

I'd rather it looked for __name__ == '__main__' than wiki_create_instance.

Ah, excellent, that sure is the right way for doing this. I had missed this __name__ thing.

Thanks for the suggestion! Patch updated.

[mwhansen]

comment:5

This looks good to me.

[mwhansen]

Reviewer: Mike Hansen