python function and .format command

Question

hi please help me understand this code

1.what ".format" do in this in this code ??!!
2.and please tell me what happened in return " resp[1] == 's' "???

def buzz(self, addr, length):
resp = self.send_this('+B{}{:0>2x}-'.format(addr, length))
return resp[1] == 's'

Answer 1

1. .format put variables address and length into a string in formated way. for details see
https://pyformat.info
2. it is output of the function. it returns True or False depending on the second character of the string in variable resp

Answer 2

ok