Fix pywebview with PyInstaller or pythonw (caused by bottle.py) #1048
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Bottle.py versions prior to 0.12.23 (the latest on PyPi as of Feb 2023) require stdout and stderr to exist when that package is imported, which is not the case on Windows when using pythonw.exe or PyInstaller >= 5.8.0.
This change is similar to the recently-merged PR #1038 that fixed #1029, but the fix in that PR only works if using bottle.py 0.13-dev, which is unlikely in most cases given that this version is not on PyPi (note that the fix it contains was committed over two years ago in January 2021).
This change uses a
TemporaryFile
instead ofDummyLogWriter
to resolve the issue. Fixes #1044.