PyQt5 import出现问题求解

代码：
import sys
from PyQt5.QtWidgets import QApplication, QLabel

if name == '__main__':
app = QApplication(sys.argv) # 1
label = QLabel('1') # 2
label.show() # 3
sys.exit(app.exec_()) # 4

提示：
ModuleNotFoundError: No module named 'PyQt5.Qt'; 'PyQt5' is not a package

https://blog.csdn.net/mr_poppy/article/details/80274771

请在Python目录（Lib）里的site-packages里查看是否有PyQt5
若无，开始键+R输入cmd，随后在cmd里输入pip install PyQt5
（建议使用PyQt5 v.5.15.7)

Microsoft Windows [Version 10.0.19043.1889]
(c) Microsoft Corporation. All rights reserved.
 
C:\Users\XX>pip install PyQt5==5.15.7
Collecting PyQt5

若有该安装包，建议重新下载