In conclusion, we have discussed how to install Calibre in Ubuntu 20.04 LTS release. Then, use proper tabs and spaces at the beginning of the self._listener._unlink.cancel() code. TabError: inconsistent use of tabs and spaces in indentation In certain circumstances it may still throw an indentation error – if self._listener._unlink is not None: And, subsequently appended the file with an if statement. We have put a hash before the original code. So, it goes like this – #self._listener._unlink.cancel()

We need to the edit the code from Line 110. We have used featherpad – featherpad server.py So head to the directory, using cd command-line utility, where our server.py is stored – cd /usr/lib/calibre/calibre/utils/ipc/Īnd, open the file server.py using a text-editor. Then, we need to edit a file – server.py to fix that. If we get an error – AttributeError: 'NoneType' object has no attribute 'cancel' If it doesn’t, then open a terminal again and issue the following – calibre If the application is launched from there then its fine.

Now, to install Calibre – sudo apt install calibreĪt this point, we would get the Calibre shortcut available in Systems’ main menu. Hence, issue the following in terminal – sudo apt update This ensures we get the latest version of the package available i.e. Therefore, it is necessary to update the repository first. Since we would use standard Ubuntu repository to install the package. In case you don’t have one, then we advise you to contact your System Administrator for assistance. Note: Following operations would require you to have superuser privileges. But, as of now we have Calibre v4.99.4 available through standard Ubuntu repository. At the time of writing, latest stable release is Calibre v5.4.2. In this article, we would discuss how to install Calibre in Ubuntu 20.04 LTS.įurthermore, its a cross-platform application. Through Calibre we can manage wide variety of e-book file formats.

It was first released on October 31, 2006. Calibre is an open source e-book application.

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