Installation of the plugin DEDRM in Calibre - Syntax error

Question

I'm trying to install the plugin DEDRM 6.7.0 in Calibre 5.7.2 (operating system: Windows 10), but I got the following error:

calibre, version 5.7.2 ERRORE: Eccezione non gestita: SyntaxError:invalid syntax (calibre_plugins.dedrm.init, line 168)

calibre 5.7.2 [64bit]  embedded-python: True is64bit: True
Windows-10-10.0.19041 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.19041')
Python 3.8.5
Windows: ('10', '10.0.19041', '', 'Multiprocessor Free')
Interface language: it
Traceback (most recent call last):
  File "calibre\gui2\preferences\plugins.py", line 317, in add_plugin
  File "calibre\customize\ui.py", line 472, in add_plugin
  File "calibre\customize\ui.py", line 61, in load_plugin
  File "calibre\customize\zipplugin.py", line 293, in load
  File "importlib\__init__.py", line 127, in import_module
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "calibre\customize\zipplugin.py", line 185, in exec_module
  File "calibre\customize\zipplugin.py", line 181, in get_code
  File "calibre_plugins.dedrm.__init__", line 168
    print u"{0} v{1}: Copying needed library files from plugin's zip".format(PLUGIN_NAME, PLUGIN_VERSION)
          ^
SyntaxError: invalid syntax

How can I overcome this problem?

Answer 1

The plugin DEDRM 6.7.0 is not compatible with Calibre 5.7.2. It works with Calibre 4.23.0 (see here).