How do I take an input after responding to a previous input?

I'm just starting to learn how to code with Python 3.x and I'm trying to make a number game where the user tries to guess a random integer between 1-100. The program is supposed to give the user a hint by telling them if their guess was too high or too low, but how do I let the program give an output and take another guess after that?

Here's the code so far: (line breaks may look a little messy)

from random import *  

x = randint(1, 100)    # Pick a random number between 1 and 100.  

print("I'm thinking of a number between 1 and 100.")    #informs user  
guess = input("Guess which number I'm thinking of: ")   #takes guess for evaluation  
print("Your first guess was "+guess)  

if x > int(guess):  
    print("The number I'm thinking of is higher than "+guess)

if x < int(guess):  
    print("The number I'm thinking of is lower than "+guess)

if x == int(guess):  
    print("Correct!")


print("End")    #annouces end of program