設備MAC osx，環境python2.7和python3.8
py檔案共兩個，`Sandwich.py` 和`MainWidget.py`，都是用 pyqt5 開發的，使用`py2app`模塊打包不成功（`pyinstaller`也試過也不成功）。
情況描述：
- 右擊 Sandwich.py 使用 python 啟動器啟動程式，發生以下錯誤：
The default interactive shell is now zsh.
To update your account to use zsh, please run `chsh -s /bin/zsh`.
For more details, please visit https://support.apple.com/kb/HT208050.
cd '/Users/Strong-ee/Desktop/SandwichApp-master_pic/' && '/usr/bin/pythonw' >'/Users/Strong-ee/Desktop/SandwichApp-master_pic/Sandwich.py' && echo Exit status: $? && >exit 1
Strong-EEdeMini:~ Strong-ee$ cd '/Users/Strong-ee/Desktop/SandwichApp-master_pic/' && >'/usr/bin/pythonw' '/Users/Strong-ee/Desktop/SandwichApp-master_pic/Sandwich.py' && echo Exit status: $? && exit 1
Traceback (most recent call last):
File "/Users/Strong-ee/Desktop/SandwichApp-master_pic/Sandwich.py", line 4, in <module>
from PyQt5 import QtCore, QtGui, QtWidgets
ImportError: No module named PyQt5
- 但是在終端中敲`pip list`顯示是有`pyqt5`并確定安裝了模塊`pyqt5`；
- 依照 https://www.jianshu.com/p/afb6b2b97ce9 ，方法，輸入`python setup.py py2app`使用默認的 python2.7 打包出來的 app 雙擊打開報錯不能使用，用 `python3 setup.py py2app`，也即用 python3.8打包的 app 直接閃退，求原因！非常急！
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