PyQt5 crashes to answer

A simple program does not copy on the Internet, but it always crashes, and Sogou Input also miraculously crashes

import sys
from PyQt.QtWidgets import QApplication, QWidget

if name ="_ _ main__":

app = QApplication(sys.argv)
w=QWidget()
w.show()
sys.exit(app.exec_())
Aug.17,2021
The

code looks fine, and sometimes you need to look at your environment configuration and the main error messages.
or describe whether the collapse you are talking about is a flicker, a crash or an error?

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-64f5-1e4554c-44b18.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e4554c-44b18.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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