Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 2155 by [email protected]: lambdify() does not convert
complex quantities properly with the "numpy" option
http://code.google.com/p/sympy/issues/detail?id=2155
The following example illustrates the problem:
import numpy as np
import sympy
x = sympy.var('x')
y = x**2 + sympy.I*2
y_func = sympy.lambdify((x), y, "numpy")
a = np.arange(10)
res = y_func(a)
It causes an error because "I" is an unrecognised global symbol. I am using
sympy 0.6.7. I have been able to get my code to work by replacing "numpy"
with ("numpy", {"I":1j}), however I would expect this conversion to be made
automatically.
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