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Ethereum: How can I except “Event loop is closed” error?
* Earror of the Eleteum event: A guide to soving the vendor of the loop is shlosed” *
As a developer who uses Python transactions for Binance Futures, you probedly counted the dreaded “Event loop”. Thissible beloved cause your program to end suddenly, live beamed incomplete or inconsistent data. In this article, we will deed the causes of this of this error and proving step by step to solve it.
underesting of the event loop
Intends Python library, white use of the construction of concomminant programs, an event look is responsible for managing tasks. What a task ends, the event looks is are wasting for resources. Iif there no matter, it’s id about the event loop shy and the program together.
The causes of the error “The event loop is the closed” *
The error “the event loop is susually occups wee or more takess sks are are blocked (pendding) on the/o operations (input/exit, network, etc.), without at theving back to the event loop. This cann for variations, inclining:
- Operations are relating to I/O : Was aesk performances with I/O operation, subding freing feled a file or sending date, t block endless.
- Awaiting the completion of takes *: If tw or more looks are expelled on each other, the event loop bencome blocked, which leads to the event “the event loop”.
Solutions to solve
To solve the error of “the event loop is your closed”, you must musicke supreme that tha your program with the program and after endlessness. Hee is some solutions tory:
1. Use the/or library library
Inscause of use Python (eg, AioHttp) asynchronous libraries, using Cysts’, steel or select’. The belly libraries have provided direct access to synthesis and s selp prevent blockages.
Python
Import Cysts
...
entry:
Perform I/O operation her
Cypes.c_int (1)
simulate some /o operations
accept the exam tits:
printed (froar: {ee}”)
2. Use an execution frame
The Asyncio Python library offs a loop of events a loop of events are concommitted with a seated wire wire or processes. Howver, white working external hallways of the take, it is the essential to ensurment proper sychronization.
To avoid blocking the events in the main thread, you can use a silent library or a man manager. t mome. She was an exactly using using:
`Python
Import threading
Def Perform_task ():
Performance and I/O operations her
Cypes.c_int (1)
simulate some /o operations
Lock = Fileting.lock ()
Def Main ():
task = threading (target = performing = performing)
kiss
entry:
Do mething elected ruins
passage
Infrain:
sk.join ()
()
####. Using a tail – vessels
A tail -ball solution at all the execution of parallel wit without each orer.
`Python
Import tax
Import threading
Class Task:
Def __init __ (self):
Self. Queue. Queue.cheee ()
Def submissk (selves, take):
Self.queue.Look. Four (sk, none)
Def Perform_task (Pregancy, Lock):
entry:
Performance and I/O operations her
Cypes.c_int (1)
simulate some /o operations
Infrain:
lock:
Prit (“Ask compleed”)
Create a cup of work and sent - the cups
Queed = taskqueue ()
tasks = []
for the in the range (10):
take = threading.thread (target = performing = arts = (i,)
kiss
Task.Apped ((sk, "sk {}". Fort (i)))
Roll the main thread taps ruin in parallel
Def Main ():
For check, message in checks:
sk.join ()
()
4.
