Question: 
Write a python function to convert octal number to decimal number.


Model's Code:
def octal_To_Decimal(octal):
    decimal = 0
    octal_str = str(octal)[::-1]
    for index, digit in enumerate(octal_str):
        decimal += int(digit) * (8 ** index)
    return decimal



Sample Correct Code:
def octal_To_Decimal(n):  
    num = n; 
    dec_value = 0; 
    base = 1; 
    temp = num; 
    while (temp): 
        last_digit = temp % 10; 
        temp = int(temp / 10); 
        dec_value += last_digit*base; 
        base = base * 8; 
    return dec_value; 


Asserts:
assert octal_To_Decimal(25) == 21
assert octal_To_Decimal(30) == 24
assert octal_To_Decimal(40) == 32


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

Test 194 of 974: 142/194 (73.19587628865979%): success