prime, non prime and composite

checkprime.py

userinput = int(input("Enter the number to check prime\n"))
a = []
if userinput == 1:
    print("One is not a prime nor a composite")
else:
    if userinput == 2 or userinput%2 != 0:
        for x in range(1,userinput):
            if userinput%x==0 :
                a.append(x)
        if len(a)==1:
            print("Number is prime")
        else:
            print("Number is composite")
    else:
        print("Number is not prime")