Zrób sobie asyncio

*dla ubogich

Cześć

mam na imię michał

programuję w C++

mieszkam w krakowie

Agenda

generatory

Pętla zdarzeń

sockety

context switching

czyli jak jednocześnie żuć gumę i iść po schodach

CONTEXT SWITCHing

yield

CONTEXT SWITCHing

NEXT()

CONTEXT SWITCHing

SEND()

CONTEXT SWITCHing

rysunek!

yield

CONTEXT SWITCHing

yield from

_i = iter(EXPR)
try:
    _y = next(_i) # ------------------ "yield from"
except StopIteration as _e:
    _r = _e.value
else:
    while 1:
        try:
            _s = yield _y # ---------- "yield"
        except GeneratorExit as _e:
            try:
                _m = _i.close
            except AttributeError:
                pass
            else:
                _m()
            raise _e
        except BaseException as _e:
            _x = sys.exc_info()
            try:
                _m = _i.throw
            except AttributeError:
                raise _e
            else:
                try:
                    _y = _m(*_x)
                except StopIteration as _e:
                    _r = _e.value
                    break
        else:
            try:
                if _s is None:
                    _y = next(_i) # --- "next"
                else:
                    _y = _i.send(_s)
            except StopIteration as _e:
                _r = _e.value
                break
RESULT = _r

yield from

_i = iter(EXPR)
try:
    _y = next(_i) # ------------------ "yield from"
except StopIteration as _e:
    _r = _e.value
else:
    while 1:
        try:
            _s = yield _y # ---------- "yield"
        except GeneratorExit as _e:
            try:
                _m = _i.close
            except AttributeError:
                pass
            else:
                _m()
            raise _e
        except BaseException as _e:
            _x = sys.exc_info()
            try:
                _m = _i.throw
            except AttributeError:
                raise _e
            else:
                try:
                    _y = _m(*_x)
                except StopIteration as _e:
                    _r = _e.value
                    break
        else:
            try:
                if _s is None:
                    _y = next(_i) # --- "next"
                else:
                    _y = _i.send(_s)
            except StopIteration as _e:
                _r = _e.value
                break
RESULT = _r

yield from

PEP 380

INPUT/OUTPUT

socket

INPUT/OUTPUT

BIND(), LISTEN(), ACCEPT()

INPUT/OUTPUT

recv()

INPUT/OUTPUT

sendall()

INPUT/OUTPUT

select.poll()

Pętla zdarzeń

BIEDA-ASyNCIO

w 5 minut

Dziękuję

mrzechonek/ghetto-asyncio