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if loop not working

asked 2016-08-03 10:32:40 -0600

nebuckandazzer gravatar image

I have to use an if loop in my program. I am checking the irreducibility of a collection of polynomials. If f(x) is a reducible polynomial, then I want to find its factor. This is my code

v=f.is_irreducible()
if (v==0) f.factor()

But I am getting a syntax error. Can someone help me ?

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answered 2016-08-03 11:34:23 -0600

updated 2016-08-03 13:05:36 -0600

You need a colon:

if (v==0): f.factor()

I would actually write this as:

if not f.is_irreducible():
    f.factor()

Your assignment of v=f.is_irreducible() doesn't seem to be necessary unless you want to use v several times later. If so, you could do

v = f.is_irreducible()
if not v:  # better than checking v == 0
    f.factor()
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Asked: 2016-08-03 10:32:40 -0600

Seen: 49 times

Last updated: Aug 03 '16