Python: 'Instancemethod' object is unsubscriptable - help

[stopgo]

Hi folks, im having some trouble printing a buffered item in python. My code is as follows:

Class buffer:
       def __init__(self, max):
            self.data = [0 for i in range(max)]

       def append(self,mag) :
           self.data.pop(0)
           self.data.append(byte)

       def get(self):
           return self.data

ring = 4

while (ring > 0):
        buf = buffer(3)

        for i in range(5):
             line = ser.read(4)
             buf.append(byte)
             print buf.get()

             ring -= 1
             if ring == 0:
                   break
           
              print buf.get[0]
              print buf.get[3]

The code is fine until I add in the last two lines: (print buf.get[0] and print buf.get[3])

I get the error:

"TypeError: 'instacemethod' object is unsubscriptable.

It seems im violating pythons rules by requesting elements 0 & 3 from "buf.get"

Might anyone be able to point me towards the direction of being able to access elements 0 or 3 from that buffer ? Or any other element for that matter.

Much appreciated.
- stopgo

[tetsujin]

buf.get is a member function of the object buf.

To use buf.get, you need to call it, using buf.get() as you did in the first "print" line.

The problem with "print buf.get[3]" is that you're treating the function as an array, where what you want is to evaluate the function and treat the result as an array.

Basically, "print buf.get()[3]" should work.

[stopgo]

and it most definitely does.

Good looking out tetsujin !

Thanks most importantly for the explanation. Answered a few other querries I had.

Much thanks.