解决This application failed to start because no Qt platform plugin could be initialized. Reinstalling

古城微笑少年丶 2022-11-21 14:57 183阅读 0赞

### 解决This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. ###

### Windows pyqt打开designer.exe报错 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTE5NDE3MQ_size_16_color_FFFFFF_t_70_pic_center]

#### 报错信息 ####

This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

![在这里插入图片描述][20201102132421734.png_pic_center]

#### 解决办法 ####

替换两个文件  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTE5NDE3MQ_size_16_color_FFFFFF_t_70_pic_center 1]

cd  ..\Python\Lib\site-packages\pyqt5_tools\Qt\plugins\platforms 
    
    复制上图中的两个文件到
    
    cd  ..\Python\Lib\site-packages\pyqt5_tools\Qt\bin\platforms

将将原有文件重命名 - ，放置新文件  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTE5NDE3MQ_size_16_color_FFFFFF_t_70_pic_center 2]

#### 再次打开designer.exe，问题决了 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTE5NDE3MQ_size_16_color_FFFFFF_t_70_pic_center 3]

#### 安装pyqt5 ####

pip install PyQt5 -i https://pypi.douban.com/simple

#### 安装qt工具 ####

pip install PyQt5-tools -i https://pypi.douban.com/simple

> > > #### 欢迎大家交流学习，任何问题都可以留言 ####

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTE5NDE3MQ_size_16_color_FFFFFF_t_70_pic_center]: /images/20221120/5c87d528fc3144f68629b02a8b471a32.png
[20201102132421734.png_pic_center]: /images/20221120/a3ae87378d744ec8a3da70f461088eaf.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTE5NDE3MQ_size_16_color_FFFFFF_t_70_pic_center 1]: /images/20221120/af255494b6684838988fa0bcf50255d1.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTE5NDE3MQ_size_16_color_FFFFFF_t_70_pic_center 2]: /images/20221120/b67b1514b919493893a6ce832669d48a.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTE5NDE3MQ_size_16_color_FFFFFF_t_70_pic_center 3]: /images/20221120/131705f08d9e4306b9beb662bb699480.png

解决This application failed to start because no Qt platform plugin could be initialized. Reinstalling

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