Status: Accepted
Owner: [email protected]
Labels: Type-Defect Priority-Medium NeedsReview
New issue 2154 by [email protected]: pprint Sum and Product needed
http://code.google.com/p/sympy/issues/detail?id=2154
pprint has some builtin methods for handling vertical and horizontal
objects, but a 2-d object like a sum sign presents a bit of a problem. I've
attempted a workaround solution that produces the following:
h[1] >>> s=Sum(i,i);pprint(s)
__
\ `
) i
/_,
i
h[1] >>> s=Sum(i,(i,1));pprint(s)
_____
\ `
) i
/____,
i = 1
h[1] >>> s=Sum(i,(i,1,3));pprint(s)
3
_____
\ `
) i
/____,
i = 1
h[1] >>> s=Sum(x/(x+y), (x,1, 10));pprint(s)
10
_____
\ `
\ x
) -----
/ x + y
/____,
x = 1
h[1] >>> s=Sum(x/(x+y), (x,1, a/b));pprint(s)
a
-
b
_____
\ `
\ x
) -----
/ x + y
/____,
x = 1
h[1] >>> s=Sum(x**2/(x+y), (x,1, a/b),(y,1,4));pprint(s)
a
-
4 b
_____ _____
\ ` \ `
\ \ 2
\ \ x
/ / -----
/ / x + y
/____, /____,
y = 1 x = 1
h[1] >>> s=Sum(x**2/(x+y), (x,1, a/b),(y,a/b**2,4));pprint(s)
a
-
4 b
______ _____
\ ` \ `
\ \ 2
\ \ x
/ / -----
/ / x + y
/_____, /____,
a x = 1
y = --
2
b
All the sum sign heights are based on the argument height; they are all
padded on the right by one space. If anyone has suggestions or wants to
test this out please see my pprintSum branch in smichr's github account.
(I'm not sure if I should immediately put this as a pull request or let it
simmer here for a while and only put it there when the code is truly ready
to go based on dicussion...so I'm not putting a pull request in yet.)
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