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Can you explain me the use of variable k in following program

p.i.n.k.u asked:

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num = int(input("enter a number")

i=2
k=0

while num>i:
    if num%i==0:
       k=1
       print("Number is not a prime number")
       i+=1
       break
if k==0:
   print("number is a prime number")


What I have tried:

i want to know why we use k in this code.
Tags: Python3.6

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