Function and disassembly

gistfile1.txt

def f(a):
    t = 0
    for x in a:
        if x > 0:
            t = t + x
    return t

import dis

dis.dis(f)

# OUTPUT

  2           0 LOAD_CONST               1 (0)
              2 STORE_FAST               1 (t)    

  3           4 LOAD_FAST                0 (a)    
              6 GET_ITER
        >>    8 FOR_ITER                20 (to 30)
             10 STORE_FAST               2 (x)    

  4          12 LOAD_FAST                2 (x)    
             14 LOAD_CONST               1 (0)    
             16 COMPARE_OP               4 (>)    
             18 POP_JUMP_IF_FALSE        8        

  5          20 LOAD_FAST                1 (t)    
             22 LOAD_FAST                2 (x)    
             24 BINARY_ADD
             26 STORE_FAST               1 (t)    
             28 JUMP_ABSOLUTE            8        

  6     >>   30 LOAD_FAST                1 (t)    
             32 RETURN_VALUE