eBook download fails with python error

[Bubba Smiff]

When trying to download an ebook from within Calibre, I receive the following:

calibre, version 4.12.0
ERROR: Unhandled exception: <b>AttributeError</b>:'str' object has no attribute 'decode'

calibre 4.12 embedded-python: False is64bit: True
Linux-5.5.10-200.fc31.x86_64-x86_64-with-fedora-31-Thirty_One Linux ('64bit', 'ELF')
('Linux', '5.5.10-200.fc31.x86_64', '#1 SMP Wed Mar 18 14:21:38 UTC 2020')
Python 3.7.6
Linux: ('Fedora', '31', 'Thirty One')
Interface language: None
Traceback (most recent call last):
  File "/usr/lib64/calibre/calibre/gui2/store/search/search.py", line 390, in result_item_activated
    self.download_book(result)
  File "/usr/lib64/calibre/calibre/gui2/store/search/search.py", line 401, in download_book
    self.gui.download_ebook(result.downloads[ext], filename=fname, create_browser=result.create_browser)
  File "/usr/lib64/calibre/calibre/gui2/ebook_download.py", line 147, in download_ebook
    start_ebook_download(Dispatcher(self.downloaded_ebook), self.job_manager, self, cookie_file, url, filename, save_loc, add_to_lib, tags, create_browser)
  File "/usr/lib64/calibre/calibre/gui2/ebook_download.py", line 131, in start_ebook_download
    description = _('Downloading %s') % filename.decode('utf-8', 'ignore') if filename else url.decode('utf-8', 'ignore')
AttributeError: 'str' object has no attribute 'decode'

[Kovid Goyal (kovid)]

Fixed in branch master. The fix will be in the next release. calibre is usually released every alternate Friday.

 status fixreleased