Question

hey everyone...
could anyone tell me how to assert that the input polynomial has atleast one real root in problem set 2..also how do i assert that the elements of the tuple are not of string type.??

Answer 1

Don't know how you could assert that the function has a real root without checking it - maybe best to document this restriction in a docstring

here is an expression that will return false if the tuple has a string in it
http://dpaste.com/763895/

Answer 2

or
True not in map(lambda k: isinstance(k, str), x)

Answer 3

Thanks!
yeah maybe it is better to put the restriction in doc string