Gist for the elif Quora answer

elif.bytecode

  1           0 LOAD_CONST               0 (5)
              2 STORE_NAME               0 (x)

  2           4 LOAD_NAME                0 (x)
              6 LOAD_CONST               0 (5)
              8 COMPARE_OP               0 (<)
             10 POP_JUMP_IF_FALSE       22

  3          12 LOAD_NAME                1 (print)
             14 LOAD_CONST               1 ('x less than 5')
             16 CALL_FUNCTION            1
             18 POP_TOP
             20 JUMP_FORWARD            26 (to 48)

  4     >>   22 LOAD_NAME                0 (x)
             24 LOAD_CONST               2 (10)
             26 COMPARE_OP               0 (<)
             28 POP_JUMP_IF_FALSE       40

  5          30 LOAD_NAME                1 (print)
             32 LOAD_CONST               3 ('x less than 10')
             34 CALL_FUNCTION            1
             36 POP_TOP
             38 JUMP_FORWARD             8 (to 48)

  7     >>   40 LOAD_NAME                1 (print)
             42 LOAD_CONST               4 ('x bigger or equal to 10')
             44 CALL_FUNCTION            1
             46 POP_TOP
        >>   48 LOAD_CONST               5 (None)
             50 RETURN_VALUE

elif.py

x = 5
if x < 5:
    print("x less than 5")
elif x < 10:
    print("x less than 10")
else:
    print("x bigger or equal to 10")

generate.sh

#!/bin/bash

python3 -m dis noelif.py > noelif.bytecode
python3 -m dis elif.py > elif.bytecode

noelif.bytecode

  1           0 LOAD_CONST               0 (5)
              2 STORE_NAME               0 (x)

  2           4 LOAD_NAME                0 (x)
              6 LOAD_CONST               0 (5)
              8 COMPARE_OP               0 (<)
             10 POP_JUMP_IF_FALSE       22

  3          12 LOAD_NAME                1 (print)
             14 LOAD_CONST               1 ('x less than 5')
             16 CALL_FUNCTION            1
             18 POP_TOP
             20 JUMP_FORWARD            26 (to 48)

  5     >>   22 LOAD_NAME                0 (x)
             24 LOAD_CONST               2 (10)
             26 COMPARE_OP               0 (<)
             28 POP_JUMP_IF_FALSE       40

  6          30 LOAD_NAME                1 (print)
             32 LOAD_CONST               3 ('x less than 10')
             34 CALL_FUNCTION            1
             36 POP_TOP
             38 JUMP_FORWARD             8 (to 48)

  8     >>   40 LOAD_NAME                1 (print)
             42 LOAD_CONST               4 ('x bigger or equal to 10')
             44 CALL_FUNCTION            1
             46 POP_TOP
        >>   48 LOAD_CONST               5 (None)
             50 RETURN_VALUE

noelif.py

x = 5
if x < 5:
    print("x less than 5")
else:
    if x < 10:
        print("x less than 10")
    else:
        print("x bigger or equal to 10")