From ff4f5fcb20f3996a9ab5ceae30e934bf5c726929 Mon Sep 17 00:00:00 2001
From: "ondrej.certik" <devnull@localhost>
Date: Fri, 5 Oct 2007 14:28:01 +0000
Subject: [PATCH] fixed some more problem in powering integers

---
 sympy/core/numbers.py                       | 13 ++++++-------
 sympy/core/tests/test_arit.py               |  8 ++++++--
 sympy/polynomials/tests/test_polynomials.py |  1 +
 3 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/sympy/core/numbers.py b/sympy/core/numbers.py
index a4719c1..617dbcb 100644
--- a/sympy/core/numbers.py
+++ b/sympy/core/numbers.py
@@ -682,13 +682,12 @@ class Integer(Rational):
                             x, xexact = integer_nthroot(b.p, i)
                             if xexact:
                                 return Integer(x)**(e * i)
-                    else:
-                        #TODO: check this, what is the else: doing here?
-                        # Try to get some part of the base out, if exp > 1
-                        if e.p > e.q:
-                            i = e.p / e.q
-                            r = e.p % e.q
-                            return b**i * b**Rational(r, e.q)
+                    # Try to get some part of the base out, if exponent > 1
+                    if e.p > e.q:
+                        i = e.p / e.q
+                        r = e.p % e.q
+                        return b**i * b**Rational(r, e.q)
+
                 else:
                     return (-1)**e * (-b)**e
 
diff --git a/sympy/core/tests/test_arit.py b/sympy/core/tests/test_arit.py
index a889ffd..a115e8b 100644
--- a/sympy/core/tests/test_arit.py
+++ b/sympy/core/tests/test_arit.py
@@ -146,8 +146,8 @@ def testpow():
 
 @XFAIL
 def test_pow2():
-    # XXX These fail - the first three are maybe discutable, 
-    # let's see SAGE and similar. The last one is a bug 417
+    # XXX These fail - they are maybe discutable, 
+    # let's see SAGE and similar.
     assert ((-x)**2)**Rational(1,3) == ((-x)**Rational(1,3))**2
     assert (-x)**Rational(2,3) == x**Rational(2,3)
     assert (-x)**Rational(5,7) == -x**Rational(5,7)
@@ -155,6 +155,10 @@ def test_pow2():
 def test_pow_issue417():
     assert 4**Rational(1, 4) == 2**Rational(1, 2)
 
+def test_pow3():
+    assert 2**(Rational(3)/2) == 2 * 2**Rational(1, 2)
+    assert 2**(Rational(3)/2) == sqrt(8)
+
 def test_expand():
     p = Rational(5)
     e = (a+b)*c
diff --git a/sympy/polynomials/tests/test_polynomials.py b/sympy/polynomials/tests/test_polynomials.py
index 0463635..4deecf1 100644
--- a/sympy/polynomials/tests/test_polynomials.py
+++ b/sympy/polynomials/tests/test_polynomials.py
@@ -5,6 +5,7 @@ import py
 
 from sympy import *
 from sympy.core.basic import S # Use Singleton comparisons.
+Pi = pi
 
 ## sympy/modules/polynomials/base.py
 
-- 
2.11.4.GIT