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Fixed matrix printing in the LambdaPrinter. #9595

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merged 1 commit into from Jul 3, 2015
Merged

Fixed matrix printing in the LambdaPrinter. #9595

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3 changes: 2 additions & 1 deletion sympy/printing/lambdarepr.py
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Expand Up @@ -11,7 +11,8 @@ class LambdaPrinter(StrPrinter):
"""

def _print_MatrixBase(self, expr):
return "%s(%s)" % (expr.__class__.__name__, str(expr.tolist()))
return "%s(%s)" % (expr.__class__.__name__,
self._print((expr.tolist())))

_print_SparseMatrix = \
_print_MutableSparseMatrix = \
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6 changes: 6 additions & 0 deletions sympy/printing/tests/test_lambdarepr.py
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Expand Up @@ -16,6 +16,12 @@ def test_matrix():
A = Matrix([[x, y], [y*x, z**2]])
assert lambdarepr(A) == "MutableDenseMatrix([[x, y], [x*y, z**2]])"

# Test printing a Matrix that has an element that is printed differently
# with the LambdaPrinter than in the StrPrinter.
p = Piecewise((x, True), evaluate=False)
A = Matrix([p])
assert lambdarepr(A) == "MutableDenseMatrix([[((x) if (True) else None)]])"


def test_piecewise():
# In each case, test eval() the lambdarepr() to make sure there are a
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