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python error in flight when mixing clojure.core.async, python/next and py/with #207
Description
Hi~ I'm playing with telethon and clojure's async library.
In python, I can use the following code to print a message.
"""A Telegram wrapper, """
from telethon.sync import TelegramClient
import toml
config = toml.load('config.toml')
client = TelegramClient('me',
config['telegram']['api_id'],
config['telegram']['api_hash'])
with client:
iterator = client.iter_messages('some_channel', limit=10)
print(next(iterator))In clojure, the following code fails and raises an exeption.
(ns main.telegram
(:require [libpython-clj2.require :refer [require-python]]
[libpython-clj2.python :refer [py. py.. py.-] :as py]
[toml.core :as toml]
[clojure.core.async :as async :refer [>! <! chan]]))
(require-python '[telethon.sync :as telethon] ; use sync because worried that python asyncio would interfere
'[builtins :as python])
(def config
(toml/read (slurp "config.toml") :keywordize))
(def tg-client (telethon/TelegramClient
"me"
(-> config :telegram :api_id)
(-> config :telegram :api_hash)))
(def raw-tg-chan (chan))
(defn watch-chan
[ch]
(async/go-loop []
(println (<! ch))
(recur)))
(watch-chan raw-tg-chan)
(async/go (>! raw-tg-chan "Hello World!"))
(comment
(py/with [tg-client tg-client]
(let
[iterator
(py. tg-client iter_messages
"some_channel" :limit 10)]
(pr (python/next iterator)) ; works
(async/go-loop []
(>! raw-tg-chan (python/next iterator)) ; raises error
(recur)))))Error message
Exception in thread "async-dispatch-15"
clojure.lang.ExceptionInfo: python error in flight {:type #object[tech.v3.datatype.ffi.Pointer 0xe99401 "{:address 0x000000012DE4A5B0 }"], :value #object[tech.v3.datatype.ffi.Pointer 0x1ba525c4 "{:address 0x000000014B679C70 }"], :traceback #object[tech.v3.datatype.ffi.Pointer 0x2baec794 "{:address 0x000000014B656E00 }"]}
at libpython_clj2.python.with$python_pyerr_fetch_error_handler.invokeStatic(with.clj:14)
at libpython_clj2.python.with$python_pyerr_fetch_error_handler.invoke(with.clj:10)
at libpython_clj2.python.ffi$check_error_str.invokeStatic(ffi.clj:684)
at libpython_clj2.python.ffi$check_error_str.invoke(ffi.clj:678)
at libpython_clj2.python.ffi$check_error_throw.invokeStatic(ffi.clj:703)
at libpython_clj2.python.ffi$check_error_throw.invoke(ffi.clj:701)
at libpython_clj2.python.ffi$simplify_or_track.invokeStatic(ffi.clj:960)
at libpython_clj2.python.ffi$simplify_or_track.invoke(ffi.clj:941)
at libpython_clj2.python.fn$call_py_fn.invokeStatic(fn.clj:197)
at libpython_clj2.python.fn$call_py_fn.invoke(fn.clj:177)
at libpython_clj2.python.bridge_as_jvm$generic_callable_pyobject$reify__15944.call(bridge_as_jvm.clj:427)
at libpython_clj2.python.fn$call_kw.invokeStatic(fn.clj:217)
at libpython_clj2.python.fn$call_kw.invoke(fn.clj:214)
at libpython_clj2.python.fn$cfn.invokeStatic(fn.clj:282)
at libpython_clj2.python.fn$cfn.doInvoke(fn.clj:273)
at clojure.lang.RestFn.invoke(RestFn.java:423)
at libpython_clj2.python.bridge_as_jvm$generic_callable_pyobject$reify__15944.invoke(bridge_as_jvm.clj:427)
at main.telegram$eval32123$fn__32124$fn__32145$state_machine__26575__auto____32152$fn__32154.invoke(NO_SOURCE_FILE:35)
at main.telegram$eval32123$fn__32124$fn__32145$state_machine__26575__auto____32152.invoke(NO_SOURCE_FILE:35)
at clojure.core.async.impl.ioc_macros$run_state_machine.invokeStatic(ioc_macros.clj:978)
at clojure.core.async.impl.ioc_macros$run_state_machine.invoke(ioc_macros.clj:977)
at clojure.core.async.impl.ioc_macros$run_state_machine_wrapped.invokeStatic(ioc_macros.clj:982)
at clojure.core.async.impl.ioc_macros$run_state_machine_wrapped.invoke(ioc_macros.clj:980)
at main.telegram$eval32123$fn__32124$fn__32145.invoke(NO_SOURCE_FILE:35)
at clojure.lang.AFn.run(AFn.java:22)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at clojure.core.async.impl.concurrent$counted_thread_factory$reify__20349$fn__20350.invoke(concurrent.clj:29)
at clojure.lang.AFn.run(AFn.java:22)
at java.base/java.lang.Thread.run(Thread.java:833)
Activity
[-]`python error in flight` when mixing `clojure.core.async` and `python/next`[/-][+]`python error in flight` when mixing `clojure.core.async`, `python/next` and `py/with`[/+]aur3l14no commentedon Jul 15, 2022
Related issue #106 and documents on telethon.sync.
aur3l14no commentedon Jul 16, 2022
Closed in favor of the more precise #208