1. Background

I wrote an interface program using pyqt through python and packaged it into an exe file using pyinstaller

2. Problem

The packaged exe file is very large, 280M, and what is even more unbearable is that it opens very, very slowly! ! !

3. Solution

(1) Change import to from...import...

After trying it, there is no use, it is still very very large, very very slow.

(2) The problem of anaconda

Some people on the Internet say that it is an anaconda problem. You should install pure python instead of anaconda, because there are too many anaconda packages. When packaging, your exe will integrate many unnecessary packages, resulting in too large exe files. Because a lot of unnecessary packages are integrated, and the exe will load the dependencies first when it is opened, resulting in slow file opening!

Therefore, install win7 with a virtual machine, and install pure python on win7. URL:https://www.python.org/, If the download is too slow, you can copy the link and download python.exe in Thunder.

Copy the file to win7, execute it with python, you will see that various packages are missing, and then install various packages according to the prompt pip until you successfully run your project on win7. Pip domestic mirror installation package:

pip install package name -i https://pypi.tuna.tsinghua.edu.cn/simple/ 

Then comes the highlight! ! !

pip install pyinstaller, and then under your project:

pyinstaller -F XXX.py

After success, there will be a XXX.exe file under the dist file

It can be found that the exe file is greatly reduced, and the opening is much faster! ! ! (280M reduced to 72M!!!)

If you don't want to display the win console, you can execute:

pyinstaller -F -w XXX.py

It is recommended to display the console at the beginning, because thisYou can see the error message prompt in the console! ! ! , For the problem of returning in a flash, you can use the mobile phone recording function to record errors for easy viewing! ! !

4. Appendix

(1) Win7 cannot install python

This is because the win7 version is too old, just update it in windows update!

(2) scipy packaging error

When pyinstaller was packaging, the generated exe file could not be opened. I checked the error, it was because of scipy.

The original version of scipy is 1.3.3. I think the version is too high, so I uninstalled and reinstalled scipy==1.0.0

Successfully packaged! ! !

(3) No access rights

I originally installed python in the Program Files of the C drive, and found that there were often no access rights problems, so I uninstalled and reinstalled it in another location without any problems.