Ascii product character for printing ProductSet

Fixes sympy/sympy#10413 // edited by skirpichev
skirpichev · Mar 17, 2017 · 7d0bb5f · 7d0bb5f
1 parent e539ea5
commit 7d0bb5f
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diff --git a/diofant/printing/pretty/pretty.py b/diofant/printing/pretty/pretty.py
@@ -1334,7 +1334,7 @@ def _print_ProductSet(self, p):
         if len(p.sets) > 1 and not has_variety(p.sets):
             return self._print(Pow(p.sets[0], len(p.sets), evaluate=False))
         else:
-            prod_char = "\N{MULTIPLICATION SIGN}"
+            prod_char = "\N{MULTIPLICATION SIGN}" if self._use_unicode else 'x'
             return self._print_seq(p.sets, None, None, ' %s ' % prod_char,
                                    parenthesize=lambda set: set.is_Union or
                                    set.is_Intersection or set.is_ProductSet)

diff --git a/diofant/printing/pretty/tests/test_pretty.py b/diofant/printing/pretty/tests/test_pretty.py
@@ -3097,6 +3097,15 @@ def test_ProductSet_paranthesis():
     assert upretty(Union(a*b, b*FiniteSet(1, 2))) == ucode_str
 
 
+def test_sympyissue_10413():
+    ascii_str = '[2, 3] x [4, 7]'
+    ucode_str = '[2, 3] × [4, 7]'
+
+    a, b = Interval(2, 3), Interval(4, 7)
+    assert pretty(a*b) == ascii_str
+    assert upretty(a*b) == ucode_str
+
+
 def test_pretty_limits():
     expr = Limit(x, x, oo)
     ascii_str = \