finitefunc

A function whose domain is a finite set can be implemented using a Python dictionary. Let D be such a Python dictionary corresponding to the mathematical function $f\colon X\to Y$ where $X$ is a finite set. The value of $f$ at x is D[x] and the domain $X$ is the set of all keys of D. Return the range $\\{f(x):x\in X\\}$, in Python set.

Write a function finitefunc:

• input parameter: a dict-type object D

  • D has at most 1000 keys.
  • Every key and value of D is an int-type object whose absolute value is less than or equal to $1000$.

• return value: the set-type object S representing the range of the function

  • Every element of S should be an int-type object.