micropython example

print.py

# ==== PSEUDO translation for micropython

# ==== GIVEN:
print("hi")

# `dis` interprets this as

"""
  2           0 LOAD_NAME                0 (print)
              2 LOAD_CONST               0 ('hi')
              4 CALL_FUNCTION            1
              6 POP_TOP
              8 LOAD_CONST               1 (None)
             10 RETURN_VALUE
"""

# ==== MPY

"""
0x00000000  4d05 021f 204c 080c 0007 1070 7269 6e74  M... L.....print
0x00000010  2e70 7920 0011 007b 1004 6869 3401 5951  .py ...{..hi4.YQ
0x00000020  6300 0000 0000 0000 0000 0000 0000 0000  c...............
"""

"""
offset 8
@ BASE_RESERVED
@ LOAD_QSTR 7072696e742e70 (print.py) #1
@ LOAD_NAME #1
@ LOAD_QSTR 0x04 + hi #2
@ CALL_FUNCTION #1 
@ POP_TOP
@ LOAD_CONST_NONE
@ RETURN_VALUE
"""

# With this view, it can be assumed that in context, .py and { are disregarded,
# the exception to that being that micropython actually is an extra layer on top of python (unlikely).
# micropython knows when returning nothing, to load_const_none.
# similar to dis' example, we can see python loading in a string to an extent, and invoking a function
# respective to that.
# 
# Both exhibit the behavior of popping the top after the invocation, loading none, then returning none (void).
# Overall, the bytecode is rather similar, besides for all of the opcodes being micropython's opcodes (shortened to be human-readable), parseable from bc0.h header.

https://imperialb.in/p/7045f577