Merge pull request #371 from eendebakpt/fix/init_printing

Fix init_printing

Author: isuruf

symengine/printing.py

@@ -1,5 +1,4 @@
-from symengine.lib.symengine_wrapper import ccode, sympify, Basic
-import symengine.lib.symengine_wrapper
+from .lib.symengine_wrapper import ccode, sympify, Basic, repr_latex as _repr_latex
 
 class CCodePrinter:
 
@@ -29,6 +28,6 @@ def init_printing(pretty_print=True, use_latex=True):
     if pretty_print:
         if not use_latex:
             raise RuntimeError("Only latex is supported for pretty printing")
-        symengine.lib.symengine_wrapper.repr_latex[0] = True
+        _repr_latex[0] = True
     else:
-        symengine.lib.symengine_wrapper.repr_latex[0] = False
+        _repr_latex[0] = False

symengine/tests/test_printing.py

@@ -1,6 +1,6 @@
 from symengine import (ccode, Symbol, sqrt, Pow, Max, sin, Integer, MutableDenseMatrix)
 from symengine.utilities import raises
-from symengine.printing import CCodePrinter
+from symengine.printing import CCodePrinter, init_printing
 
 def test_ccode():
     x = Symbol("x")
@@ -24,3 +24,9 @@ def test_CCodePrinter():
     assert myprinter.doprint(MutableDenseMatrix(1, 2, [x, y]), "larry") == "larry[0] = x;\nlarry[1] = y;"
     raises(TypeError, lambda: myprinter.doprint(sin(x), Integer))
     raises(RuntimeError, lambda: myprinter.doprint(MutableDenseMatrix(1, 2, [x, y])))
+
+def test_init_printing():
+    x = Symbol("x")
+    assert x._repr_latex_() is None
+    init_printing()
+    assert x._repr_latex_() == '$x$'