Why is Sage calling 1 a variable?

cybervigilante
411 ●10 ●30 ●45

tmonteil
27483 ●32 ●205 ●519 http://wiki.sagemath.o...

Consider

x = var('x') 
f = 1/(x-3) 

limit(f,x=3,dir='below')

UnboundLocalError: local variable 'l' referenced before assignment

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I'm using preformat so I have no idea why the first two statements keep showing up on the same line, but they aren't

cybervigilante ( 7 years ago )

The error message is local variable 'l' referenced before assignment. It's variable l (small cap L), not 1. I have reported the issue on sage-dev.

David Coudert ( 7 years ago )

Thanks for reporting.

tmonteil ( 7 years ago )

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answered 7 years ago

mforets
1413 ●9 ●27 ●44 http://marcelo-forets.fr/

updated 7 years ago

Try with limit(f, x=3, dir='minus').

I think this is a (trivial) bug, thanks for reporting. The code in question is in lines 1228-1245 of calculus.py.

Edit: this is #23048.

link

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Thanks for fixing.

tmonteil ( 7 years ago )

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Last updated: May 23 '17

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