Hi Alisha,
I have seen this problem before and eventually figured out the cause. You are directly or indirectly using either stdout or stderr as an out put for logger but pyinstaller and some or most exe builders produce exes which, when running in Windowed mode, set both of these to None and logger fails like this because None as the exception says doesn’t have an istty or any other methods.
Some possible solutions include:
Hope that this helps.
Steve
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On Apr 25, 2023, at 11:42 PM, Steve Barnes <Gadge...@live.co.uk> wrote:
Hi Alisha,
I have seen this problem before and eventually figured out the cause. You are directly or indirectly using either stdout or stderr as an out put for logger but pyinstaller and some or most exe builders produce exes which, when running in Windowed mode, set both of these to None and logger fails like this because None as the exception says doesn’t have an istty or any other methods.
Some possible solutions include:
- Set the application to be a console application so that it will open a terminal window (it can still use the GUI but log messages will go to the terminal quick but dirty
- If the application has the frozen attribute or set sys.stdout is None and no log file is specified then create your logger with the file set to os.devnull this will discard all logs
- Use logging.NullHandler if frozen or sys.stdout is None.
- Always log to a file but please consider using logging.RotatingFileHandler as the default handler if frozen or sys.stdout is None.
Hope that this helps.
Steve
From: pyins...@googlegroups.com <pyins...@googlegroups.com> On Behalf Of Alisha Jain
Sent: Monday, April 24, 2023 5:14 PM
To: PyInstaller <pyins...@googlegroups.com>
Subject: [PyInstaller] ValueError: Unable to configure formatter 'default'
Hi,
I creating a python application which uses uvicorn module. The code runs successfully, however, when I create a exe using pyinstaller, It is able to create the executable but I see following error when I run the exe file. Please help.
<image001.png>
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Hi Chris,
The python standard library os.devnull gives an operating system independent equivalent to /dev/null (IIRC it actually maps to /dev/null on *nix systems) – including MS Windows.
I have suggested in the past that python exe generators could/should set both stdout and stderr to os.devnull for windowed exes rather than using None in that case.
All the best,
Steve Barnes
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Eric,
Good Idea & done with the os.devnull solution!
Steve
From: pyins...@googlegroups.com <pyins...@googlegroups.com> On Behalf Of Eric Fahlgren
Sent: Wednesday, April 26, 2023 3:09 PM
To: pyins...@googlegroups.com
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