Python: for and if loop

[salwa17]

I made this function to code some values according to func_code value but it does not work as aaspected:

  def reg_val_list_binary2(s):
    r = []
    for i in func_code(s):
        try: 
            if  i == 3:
                r = reg_val_list3(s)
            elif  i == 1: 
                r = reg_val_list_binary(s)
        except AttributeError:
            pass
    return r

Finction reg_val_list3(s) is coded as follows:

   def reg_val_list3(s):
    v = []
    for p in s:
        if p.haslayer('ModbusADUResponse'):
            try:
                if p['ModbusADUResponse'][1].funcCode == 3:
                    v += p['ModbusADUResponse'][1].registerVal
            except AttributeError:
                pass
    return v

And function reg_val_list_binary(s):

   def reg_val_list_binary(s):
    r = []
    for x in reg_val_list1(s):
        r += [int(bit)for bit in str( bin(x) )[2:].zfill(8)] [::-1]
    return r

The problem is I have the impression that it cannot find func_code == 1 while it's in the func_code(s) list

Any idea?