Question: 
Write a function to convert an integer into a roman numeral.


Model's Code:
def int_to_roman(num):
    val = [
        1000, 900, 500, 400,
        100, 90, 50, 40,
        10, 9, 5, 4,
        1
    ]
    syms = [
        "M", "CM", "D", "CD",
        "C", "XC", "L", "XL",
        "X", "IX", "V", "IV",
        "I"
    ]
    roman_num = ''
    for i in range(len(val)):
        while num >= val[i]:
            roman_num += syms[i]
            num -= val[i]
    return roman_num



Sample Correct Code:
def int_to_roman( num):
        val = [1000, 900, 500, 400,100, 90, 50, 40,10, 9, 5, 4,1]
        syb = ["M", "CM", "D", "CD","C", "XC", "L", "XL","X", "IX", "V", "IV","I"]
        roman_num = ''
        i = 0
        while  num > 0:
            for _ in range(num // val[i]):
                roman_num += syb[i]
                num -= val[i]
            i += 1
        return roman_num


Asserts:
assert int_to_roman(1)==("I")
assert int_to_roman(50)==("L")
assert int_to_roman(4)==("IV")


Tests:
Test 1 of 3: PASS
Test 2 of 3: PASS
Test 3 of 3: PASS

Test 958 of 974: 733/958 (76.51356993736952%): success