prime number program python

1def prime(num):
2    if num>1:
3        s=int(num/2)
4        for i in range(2,s+1):
5            if num%i==0:
6                return("not prime")
7                break
8        return("prime")
9print(prime(239)) 

1n = 20
2primes = []
3
4for i in range(2, n + 1):
5	for j in range(2, int(i ** 0.5) + 1):
6 		if i%j == 0:
7 			break
8	else:
9		primes.append(i)
10
11print(primes)

1# Python program to display all the prime numbers within an interval
2
3lower = 900
4upper = 1000
5
6print("Prime numbers between", lower, "and", upper, "are:")
7
8for num in range(lower, upper + 1):
9   # all prime numbers are greater than 1
10   if num > 1:
11       for i in range(2, num):
12           if (num % i) == 0:
13               break
14       else:
15           print(num)Copied

1#make the function
2#to do this all hte vairibles go in side the function
3
4def CheckIfPrime ():
5    a1 = input("which number do you want to check")
6    a = int(a1)#you need the checking number as an int not an str
7    b = 2 #the number to check againts
8    c = ("yes")
9    while b < a:#run the loop
10        if a%b == 0:#check if the division has a remainder
11            c = ("no")#set the answer
12        b = b+1
13    print(c)#print the output
14CheckIfPrime ()#call the function  
15