for num in range(10):
    print(num+1)
    
print("done!")

x = 0
for i in range(20):
    x = i - x
print(x)

print("Done!")

for d in range(10, 0, -1):
    print(d)
    
print("done again")

s = ""
for g in range(10, 14):
    s = s + str(g) + "-"
print(s)

def isPrime(x):
    # we won't consider negative numbers,
    #   and 0 and 1 are defined to be non-prime.
    # Handle these in a special case before the loop!
    if x < 2:
        return False
    
    for factor in range(2, x):
        print(factor)
        if x % factor == 0:
            return False
    return True