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Errors with sage_eval

asked 2015-01-10 02:26:01 -0500

AndreWin gravatar image


I try to use function sage_eval and It seems for me that either I found bug either I don't understand smth.

cmds = """
def somef():
    return 443
res = somef()"""
sage_eval('res', cmds = cmds)

NameError: global name '_sage_const_443' is not defined

sage_eval('res', cmds="def somef(): return 443; res=somef()")

NameError: name 'res' is not defined.

Please give me some hints how to solve this problem. Thanks in advance.

Best regards, Andrei.

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answered 2015-01-11 12:12:10 -0500

It seems that 443 is not parsed properly in your first attempt (I don't really understand why; it might be a bug).

In any case, one way around that is the following:

sage: cmds = "def somef():\n    return Integer(443r)\nres = somef()"
sage: sage_eval('res', cmds=cmds)

In your second attempt, both return 443 and res=somef() are part of the definition of somef, so that res is not defined.

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Asked: 2015-01-10 02:26:01 -0500

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Last updated: Jan 11 '15