import math error
Dave Angel
davea at davea.name
Sun Nov 16 23:55:35 CET 2014
You forgot to specify your Python version here.
ryguy7272 <ryanshuell at gmail.com> Wrote in message:
> When I type 'import math', it seems like my Python recognizes this library. Great. When I try to run the following script, I get an error, which suggests (to me) the math library is not working correctly.
Nothing to do with the math library. It's a syntax error. And it
occurs before the first call into the math library.
>
> Script:
> import math
> def main():
> print "This program finds the real solutions to a quadratic"
> print
> a, b, c = input("Please enter the coefficients (a, b, c): ")
Ouch. input is unsafe, anot recommended. That's why python 3
renamed the raw_input function to input, eliminating the unsafe
version. Nevertheless, I'll assume you understand the risks,
and we'll go on with your problem.
> discRoot = math.sqrt(b * b - 4 * a * c)
> root1 = (-b + discRoot) / (2 * a)
> root2 = (-b - discRoot) / (2 * a)
> print
> print "The solutions are:", root1, root2
> main()
>
> Error:
> Traceback (most recent call last):
> File "C:\Users\Ryan\Desktop\QuadraticEquation.py", line 11, in <module>
> main()
> File "C:\Users\Ryan\Desktop\QuadraticEquation.py", line 5, in main
> a, b, c = input("Please enter the coefficients (a, b, c): ")
> File "<string>", line 1
> (1,1,2):
> ^
> SyntaxError: unexpected EOF while parsing
The error is occurring while parsing the user's input, which
should not have a colon. The smallest flaw with using input ()
is that user error cause strange looking exceptions.
>
> The last line is line 11. It seems like I need this, but that's what's causing the error. Does anyone here have any idea what is wrong here?
>
> Thanks.
>
--
DaveA
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