Py3 32-bit Win10 4.99 (a separate install from Py2 64-bit Win10 4.6, which still works perfectly).
First time failed with: ImportError: cannot import name 'comments_to_html' from 'calibre.library.comments' (C:\Program Files (x86)\Calibre2\\app\pylib.zip\calibre\library\comm ents.pyc)
Code:
calibre 4.99 embedded-python: True is64bit: False
Windows-10-10.0.18362-SP0 Windows ('32bit', 'WindowsPE')
32bit process running on 64bit windows
('Windows', '10', '10.0.18362')
Python 3.8.0
Windows: ('10', '10.0.18362', 'SP0', '')
Interface language: None
Successfully initialized third party plugins: Audit Log (1, 0, 13) && Author Book Count (2, 1, 8) && Author Book Count Hierarchy (1, 2, 1) && CalibreSpy (1, 0, 76) && Consolidate All Library Metadata (2, 0, 33) && Count Pages (1, 9, 0) && Drop Search Results (1, 0, 9) && English Noun Frequency (1, 0, 10) && Entities Manager (1, 0, 11) && Extract ISBN (1, 4, 4) && Favourites Menu (1, 0, 4) && Find Duplicates (1, 6, 3) && Job Spy (1, 0, 169) && Library Codes (1, 0, 41) && Library Splitter (1, 0, 1) && Media File Importer (1, 0, 21) && Modify ePub (1, 4, 0) && MultiColumnSearch (1, 0, 77) && Quality Check (1, 9, 11) && QuarantineAndScrub (3, 6, 105) && Reading List (1, 6, 6) && Resize Cover (1, 0, 2) && User Category (1, 5, 3) && View Manager (1, 4, 3) && Zotero Metadata Importer (1, 0, 61)
Registering with default programs...
Turning on automatic hidpi scaling
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 95.6235294117647 x 95.58188153310104
Using calibre Qt style: True
Registered with default programs in 2.0 seconds
Traceback (most recent call last):
File "runpy.py", line 192, in _run_module_as_main
File "runpy.py", line 85, in _run_code
File "site.py", line 89, in <module>
File "site.py", line 84, in main
File "site.py", line 55, in run_entry_point
File "debug.py", line 277, in main
File "gui_launch.py", line 73, in calibre
File "main.py", line 557, in main
File "main.py", line 384, in run_gui
File "<frozen zipimport>", line 259, in load_module
File "ui.py", line 42, in <module>
File "<frozen zipimport>", line 259, in load_module
File "init.py", line 20, in <module>
File "<frozen zipimport>", line 259, in load_module
File "book_details.py", line 19, in <module>
File "<frozen zipimport>", line 259, in load_module
File "render.py", line 16, in <module>
ImportError: cannot import name 'comments_to_html' from 'calibre.library.comments' (C:\Program Files (x86)\Calibre2\\app\pylib.zip\calibre\library\comments.pyc)