How can I get unique random output while printing a loop in python?

so I want a script to give me a set of 10 simple polynomials to simplify. Lets ignore the fact that the current output is not a valid polynomial. I want to print 10 with random integers, variables and operations, but when I loop them I just get the same problem 10 times. How can I get a unique set every time?

I was having a hard time getting a unique term, but solved that problem by creating a unique term (term0, term1) etc. for each term.

import random

def int():
    interger = random.randint(2,10)
    return interger

def variable():
    letter  = ["x","y",""]
    variable = random.choice(letter)
    return variable

def op():
    op  = ["+","-","+"]
    operation = random.choice(op)
    return operation

term0 = op(), int(), variable()
term1 = op(), int(), variable()
term2 = op(), int(), variable()
term3 = op(), int(), variable()

for x in range(10):
    print(*term0,*term1,*term2,*term3,sep='',)

I would like to get a unique output for each loop, but currently I just get the same thing 10 times.