[PYTHON]PyQt5 前置程序

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *

# 定义一个方法，用来运行主函数
def main():
    app = QApplication(sys.argv)
    exit(app.exec_())

if __name__ == "__main__":
    main()

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.Qt import *

# 定义一个方法，用来运行主函数
def main(self):
    app = QApplication(sys.argv)
    main = self()
    main.show()
    exit(app.exec_())

if __name__ == "__main__":
  ###这里输入上面的窗口名，不要括号###
    main(self)