The problem of flask manually loading ctx into the stack

problem description

Why is it that after manually loading ctx into the stack, current_app still does not point to app

the environmental background of the problems and what methods you have tried

related codes

/ / Please paste the code text below (do not replace the code with pictures)
from flask import Flask, current_app

app = Flask (_ _ name__)

ctx = app.app_context ()

ctx.push ()
a = current_app

what result do you expect? What is the error message actually seen?

the expected result is that an is the core object of flask and is actually still a local agent

Oct.29,2021

a = current_app._get_current_object()
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1c27eb4-338b2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1c27eb4-338b2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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