RE: [Edu-sig] Algebra + Python

May 1, 2001


      
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Kirby wrote:
...
There may be a better way to write the factory function than
I've shown below.  I'd like to see other solutions:
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def makepoly(A,B,C):     
        """
        Build a polynomial function from coefficients
        """
        return eval("lambda x: %s*x**2 + %s*x + %s" % (A,B,C))
How about this?
class poly:
   def __init__(self, A, B, C):
       self.A, self.B, self.C = A, B, C
   def __call__(self, x):
       return self.A * x**2 + self.B * x + self.C
...
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f = poly(2,3,4)
f(10)
234
I like it!

Kirby

RE: [Edu-sig] Algebra + Python

Kirby Urner