details: http://hg.sympy.org/sympy/rev/885e35e7f8a2
changeset: 1790:885e35e7f8a2
user: Stepan Roucka <[EMAIL PROTECTED]>
date: Fri Oct 10 23:53:33 2008 +0200
description:
Fix broken docstrings (#1147)
The patches implementing the rules for simplifying exponentiation
have broken the doctests. The problem was fixed by setting the right
assumptions. In both examples expression of the form 1/(x**a)
needs to be simplified to x**(-a). In the evalf example, the exponent
is summation index, so it is set to integer. The together example
holds only for positive x and real y.
diffs (24 lines):
diff -r 8f3fbceae17d -r 885e35e7f8a2 sympy/core/evalf.py
--- a/sympy/core/evalf.py Fri Oct 10 14:05:37 2008 +0200
+++ b/sympy/core/evalf.py Fri Oct 10 23:53:33 2008 +0200
@@ -1003,7 +1003,7 @@
Example:
>>> from sympy import Sum, Symbol, oo
- >>> k = Symbol("k")
+ >>> k = Symbol("k", integer=True)
>>> Sum(1/k**k, (k, 1, oo))
Sum(k**(-k), (k, 1, oo))
>>> N(Sum(1/k**k, (k, 1, oo)), 4)
diff -r 8f3fbceae17d -r 885e35e7f8a2 sympy/simplify/simplify.py
--- a/sympy/simplify/simplify.py Fri Oct 10 14:05:37 2008 +0200
+++ b/sympy/simplify/simplify.py Fri Oct 10 23:53:33 2008 +0200
@@ -220,6 +220,8 @@
It also perfect possible to work with symbolic powers or
exponential functions or combinations of both:
+ >>> x = Symbol('x', positive=True)
+ >>> y = Symbol('y', real=True)
>>> together(1/x**y + 1/x**(y-1))
x**(-y)*(1 + x)
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