Can an int have decimals python?

I have a piece of code for data validating user input to ensure only numbers greater than zero are taken, as below:

while True:
x = raw_input["Please enter a number greater than zero."]
try:
    x = int[x]
    num = True
except ValueError:
    print "Sorry, you entered an invalid input. Please ensure you enter only numbers  greater than zero."
if x > 0:
    if num == True:
            break
elif x