"arrow" structure

"""
The function accepts two parameters: the first is a single character, the second is a maximum size.
The function returns a string representing an "arrow" structure (see example), which is built from the input character, 
with the center of the arrow (the longest line) being the length of the size passed as a parameter.



Example of the arrow function run:

In this example, you pass the asterisk character * and the maximum size 5. That is, the middle row is 5 in length.


print(arrow('*', 5))

*
* *
* * *
* * * *
* * * * *
* * * *
* * *
* *
*
"""



def arrow(my_char, max_length):
    result = ""
    i = 0
    while i <= max_length-1:
        i += 1
        new = my_char * i
        result += new
        result += "\n"
    while i >= 0:
        i -= 1
        new = my_char * i
        result += new
        result += "\n"
        add_space = result.replace("", " ")
    return add_space



def main():	
    <your code here>

if __name__ == "__main__":
    main()






print(arrow('*', 5))


add_space = arrow('*', 5)
print (add_space)