当安装 HPLIP 最新版本时，它一直写此消息，当尝试手动安装 python“缺失”包时，它说它们已经安装。
在这里尝试了很多解决方案 - 但都没有用:((
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Distro set to Ubuntu 16.04
Initializing. Please wait...
ENTER ROOT/SUPERUSER PASSWORD
-----------------------------
Please enter the root/superuser password:
SECURITY PACKAGES
-----------------
AppArmor is installed.
AppArmor protects the application from external intrusion attempts making the application secure
Would you like to have this installer install the hplip specific policy/profile (y=yes*, n=no, q=quit) ? y
RUNNING PRE-INSTALL COMMANDS
----------------------------
OK
MISSING DEPENDENCIES
--------------------
Following dependencies are not installed. HPLIP will not work if all REQUIRED dependencies are not installed and some of the HPLIP features will not work if OPTIONAL dependencies are not installed.
Package-Name Component Required/Optional
python3-notify2 gui_qt5 OPTIONAL
python3-pyqt4-dbus gui_qt4 OPTIONAL
python3-pyqt4 gui_qt4 REQUIRED
python3-pyqt5-dbus gui_qt5 OPTIONAL
python3-pyqt5 gui_qt5 REQUIRED
python3-dbus fax REQUIRED
python3-reportlab fax OPTIONAL
Do you want to install these missing dependencies (y=yes*, n=no, q=quit) ? n
error: Installation can not continue because all REQUIRED dependencies are not installed.