Hi everybody,
First time trying to get something done in Python so please bear with me...
I'm trying to find the greatest common divisor of a set of numbers, supplied as a comma-separated string through a User Parameter. Python has a function (gcd) that does just that (originally for 2 numbers, but through the reduce function it can iterate)
However, I can't seem to pass my numbers into the function.
class FeatureProcessor(object):
def __init__(self):
pass
def input(self,feature):
# divisor = reduce(fractions.gcd, (10,15,25,50))
divisor = reduce(fractions.gcd, (FME_MacroValues['Contours']))
feature.setAttribute("divisor", divisor)
self.pyoutput(feature)
def close(self):
passThe line that's commented out works, but if I pass those same numbers through the parameter I get an error message:
Python Exception <TypeError>: not all arguments converted during string formatting
Traceback (most recent call last):
File "<string>", line 18, in input
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/fractions.py", line 25, in gcd
a, b = b, a%b
TypeError: not all arguments converted during string formatting
Error encountered while calling method `input'
f_11(PythonFactory): PythonFactory failed to process feature
A fatal error has occurred. Check the logfile above for details
I'm pretty sure it has something to do with how I'm passing the parameter, but I can't figure it out. Any suggestions?
