Exercise: Primeness (`while`)¶

Write a program that checks whether a given number is prime!

The number that the program checks can be given in two ways,

As a commandline parameter (for non-interactive use)
Prompted from the user, using the input() function

Note

A number is prime, if …

It is not equal to 1
It is only divisible by 1 and itself

$ python prime.py 7
prime
$ python prime.py 6
not prime
$ python prime.py 1
not prime
$ python prime.py 2
prime

Dependencies¶