This may be a trivial question but I have a hard time finding an explanation:
I wrote a series of elementary FiPy script (variants on the basic diffusion examples). For a long time, they run smoothly. However, after working with the latest unofficial FiPy release (operated under a different directory) for a while, all the old scripts no longer recognize functions like "exp" and "pi" unless I explicitly append "from numpy import *" at the beginning. A second look at < http://www.ctcms.nist.gov/fipy/examples/diffusion/generated/examples.diffusion.mesh1D.html> shows that this shouldn't be necessary. So my question simply is: what might have been modified along the way and how can it be fixed? Thanks. -- Yun Tao Graduate Group of Ecology Doctoral Candidate Department of Environmental Science and Policy Center for Population Biology University of California, Davis
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