if _name_ == “__main__“:NameError: name ‘_name_‘ is not defined

今天打算重新学一下pyqt5 ，遇到了一个错误；后来发现原来需要name哪里是两个斜杠

    if _name_ == "__main__":
NameError: name '_name_' is not defined

import sys
from PyQt5.QtWidgets import QApplication,QLabel
 
if __name__ == "__main__":
    app = QApplication(sys.argv)
    label = QLabel("Hello Word")
    label.show(app.exec_())