pyinstaller flask app致命错误运行.exe

Question

I am looking at this blog post for creating an executable file to run a flask app on Windows. Question, would this be useful if there was a standalone app created for people using that app that were not very computer technical? IE, just run the .exe file to open up the app on a localhost web browser versus opening up the command prompt to run a typical flask server...

Im just experimenting with this and I pip install pyinstaller as the blog post mentioned, and ran this command pyinstaller -w -F hello.py across my test flask code directory.

from flask import Flask


app = Flask(__name__)

@app.route('/')
@app.route('/index')
def index():
    return "Hello, World!"


if __name__ == '__main__':
    app.run(debug=True)

Pyinstaller seems to execute everything correctly at least it doesn't look like there are any errors compiling. As the blog post mentions there is a dist folder created and an application( hello.exe ) file created; but when I click on it to run, a box will pop up critical error failed to run hello

Any tips greatly appreciated...

Answer 1

You are setting Flask app's debug=True which means that you want to run it in debug mode. On the other hand, you are disabling the python' console in your output executable with -w flag. This is your error. Either remove -w flag from your Pyinstaller build command or set debug=False in your Flask's app.

I suggest you keep the console window because if you get any error in your Flask app you would see the error log in the console.