GCK/ string_reversed function

print("im gigi your bot, getting on the second level practicing")
print("This is a reverse_string function. How can I help you ?")
msg=input("What is your string?>")

#first=""
def reverse_function(msg):

    first=msg[-1]
    L=len(msg)
    print(L)
    for i in range(L-1):
        first=first+ msg[L-2-i]
        #print(first)
    return first


reverse=reverse_function(msg)
print(reverse)