The sinc function

$sinc(x)=\frac{sin(x)}{x}$

is defined for all real numbers $x.$ It cccurs, for example, as the diffraction pattern of a single slit

In Python we can define it as

import math

def sinc $(x)$ :

return math. $sin\frac{x}{x}$

but this implementation is incomplete.

$1$ think of values for which our function does not produce the correct resilt

$2$ fix it $($you may use try$/$except$,$ a simple if statement, or even the Heaviside function$)$ so that the function produces correct values for all real numbers