I am trying to calculate a limit:
print(limit(1/x,x=0))
Why do I get the following error:
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/tmp/ipykernel_26364/2811025272.py in <module>
---> ... print(limit(Integer(1)/x,x=Integer(0)))
TypeError: limit() got an unexpected keyword argument 'x'
For the record (i. e. future users erusing past answers) : as guessed by @Frederic C, the problem is that Sage's definition of limit by Sympi's :
sage: limit(1/x, x=0)
Infinity
sage: import sympy
sage: limit(1/x, x=0)
Infinity
sage: from sympy import limit
sage: limit(1/x, x=0)
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-15-ba76f96e233b> in <module>
----> 1 limit(Integer(1)/x, x=Integer(0))
TypeError: limit() got an unexpected keyword argument 'x'
sage: reset("limit")
sage: limit(1/x, x=0)
Infinity
So don't import limit from sympy if you want to keep Sage's definition.
And don't from sympy import *, which is a swell way to royally bugger a Sage session... and is deprecated (= no longer recommended and advised against) by Sympy's authors even in a pure Python session.
Asked: 2022-05-08 18:31:13 +0100
Seen: 196 times
Last updated: May 09 '22
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works for me
are you messing with some other definition of limit ? importing sympy ?
yes, I imported sympy. you found the bug. Now it works, after removing the import of sympy. How do I avoid the conflicting naming?