I want to have the Fibonacci sequence returned with commas between the numbers

def get_fibonacci_sequence(num: int) -> str:
'''
Function to return string with fibonacci sequence

>>> get_fibonacci_sequence(0)
''
>>> get_fibonacci_sequence(1)
'0'
>>> get_fibonacci_sequence(9)
'0,1,1,2,3,5,8,13,21'
'''

first_term = 0
second_term = 1
nth_term = 0
result = ''

for sequence in range(num):
result += str(first_term)
nth_term = first_term + second_term
first_term = second_term
second_term = nth_term
return(result)



I tried adding (+ ',') in the loop where I convert the numbers to a string and it works but not the way I want it to.


'0,1,1,2,3,5,8,13,21,'


I want to get rid of the comma after 21