Python Loop until condition is met - python-3.x

Question

I'm trying to write a program for an assignment and for one section, I need to create division questions. I need it so that when the random numbers are picked, the first number will always be larger than the second number. the function that I have created does most of the work but I cant seem to figure out how to get it to loop until the condition is met. In the code, I have tried using a while loop but when I run it, I still get the first number as being a lower number.
Does anyone have any recommendations as to how I could do this?
import random
import time
score = 0
Addition = range(1, 20)
Multiplication = ['1', '2', '3', '4', '5']
Division = ['1', '2', '4', '6', '8', '10']
def additionfunc():
for x in range (0, 4):
a = random.choice(Addition)
b = random.choice(Addition)
c = float(a) + float(b)
print("What is", a," plus", b)
answer = int(input("Please enter your answer: "))
if answer == c:
print("Correct")
print("Plus 10 points")
global score
score = score + 10
print()
time.sleep(1)
else:
print("Incorrect")
print("No points added")
print()
time.sleep(1)
print("Well done, your score was", score)
print()
mainmenu()
def multiplicationfunc():
for x in range (0, 4):
a = random.choice(Multiplication)
b = random.choice(Multiplication)
c = float(a) * float(b)
print("What is", a," multiplied by", b)
answer = int(input("Please enter your answer: "))
if answer == c:
print("Correct")
print("Plus 10 points")
global score
score = score + 10
print()
time.sleep(1)
else:
print("Incorrect")
print("No points added")
print()
time.sleep(1)
print("Well done, your score was", score)
print()
mainmenu()
def divisionfunc():
for x in range (0,4):
a = random.choice(Division)
b = random.choice(Division)
c = float(a) / float(b)
print("What is", a, "divided by", b)
answer = float(input("Please enter your answer: "))
if answer == c:
print("Correct")
print("Plus 10 points")
global score
score = score +10
print()
time.sleep(1)
else:
print("Incorrect")
print("No points added")
print()
time.sleep(1)
print("Well done, your score was", score)
print()
mainmenu()
def mainmenu():
print("Welcome to the Numeracy Game")
print("1. Addition")
print("2. Multiplication")
print("3. Division")
print("Score =", score)
time.sleep(2)
Genre = int(input("Enter the value for the mode:"))
print()
if Genre == 1:
additionfunc()
elif Genre == 2:
multiplicationfunc()
elif Genre == 3:
divisionfunc()
mainmenu();

Answer 1

I hope this is what you need:
division= ['1', '2', '4', '6', '8', '10'] #[1,2,4,6,8,10]
# you could also use random.randint(start, stop)
#if you only want even ints you can use random.randint(0,10,2)
a = random.choice(division) # random.ranint(0,10)
b = random.choice(division) # random.randint(0,10)
if b == 10:
#prevents b from being the biggest number which would result in an endless loop
b = random.choice(division)
while a < b or a==b: # if a is smaller or same as b change a
a = random.choice(division)
else:
# it would be easier to use ints instead string and only convert
# them to string in your print statemnt
c = float(a)/float(b)