When "from sage.calculus.calculus import *" is executed, the default
var() function from sage.calculus.var (L4) gets replaced by another
one from sage.symbolic.ring (L506).
There is indeed an import made in sage.calculus.calculus (L370).
However, the behavior of var() changes afterward because when var('n')
is called, the symbolic variable n is not automatically created.
So the following lines are valid before, but not after calling "from
sage.calculus.calculus import *":
sage: var('n')
sage: n
Is this normal or should a ticket be opened ?
Cheers,
JP
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