Python

Subject:	Unclear On Global Variable Use
Time:	11:50 pm.

Hi all,

I have defined global variables that I *think* are passed to functions, but I'm running into a problem:

While debugging I get the following error while converting from Cylindrical to Spherical:

Traceback (most recent call last):
File "/home/dotplaid/PythonMyStuff/coordinate_transformer.py", line 86, in <module>
radius, theta, phi = spherical("cylindrical", radius, theta, height)
File "/home/dotplaid/PythonMyStuff/coordinate_transformer.py", line 52, in spherical
phi = round(math.atan(radius/height),3)
UnboundLocalError: local variable 'radius' referenced before assignment

I presume that the error is thrown because I'm using the variable radius incorrectly, but I don't see how. I would really much rather not rename radius in order to use it, so I changed the order of use in the cylindrical and spherical functions thinking that I could use the radius that was passed in and then re-evaluate it.

Any insights that don't involve creating temporary (local) variables are most appreciated.

All the best,
.plaid

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